The Insect Folk

By Margaret Warner Morley

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Title: The Insect Folk

Author: Margaret Warner Morley

Release Date: July 8, 2006 [EBook #18790]

Language: English


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  The Insect Folk

  BY

  MARGARET WARNER MORLEY


  AUTHOR OF "SEED-BABIES," "FLOWERS AND THEIR FRIENDS"
  "LITTLE WANDERERS," ETC.

  _ILLUSTRATED BY THE AUTHOR_



  BOSTON, U.S.A.
  GINN & COMPANY, PUBLISHERS
  1903

  COPYRIGHT, 1903, BY
  MARGARET WARNER MORLEY

  _All rights reserved_




A WORD TO THE CHILDREN


DEAR CHILDREN,--The very best way to know the insects is to go
and watch them. Watch them whenever you can, and each time you will find
out something new. Books will help you, but you must watch, too. Look
more than you read.

If you need to catch them, put them under a tumbler, and feed them and
give them a drop of water every day to drink. Slip a card under the rim
of the tumbler on one side so as to let in the air. If you do not know
what to feed them, or if they will not eat, let them go after a day or
two.

If you wish to kill an injurious insect, do it _quickly and completely_.
Remember the insects are alive, and we should not make them suffer
unnecessarily.

Of course you must try to make your captives feel at home. If they live
in the sand, put sand in the tumbler and tie a piece of netting over the
top so they cannot escape.

If they live in the water, put them in a tumbler of water. And when you
have secured your captives, watch them as much as you can.

If you do not know how to pronounce the words in this book, study the
glossary at the back and it will help you.

I hope you will have a very happy time getting acquainted with your
little insect neighbors.

                                      MARGARET WARNER MORLEY.

  BOSTON,
    April 18, 1903.




  CONTENTS
                                                                    PAGE

  OUR PRETTY DRAGON FLIES                                              3

  THE FAIRY MAY FLIES                                                 25

  THE STONE FLY FOLK                                                  33

  THE SILVER FISH                                                     36

  THE OLD COCKROACHES                                                 41

  NEIGHBOR WALKING STICK                                              52

  THE GRASSHOPPER TRIBES                                              59

  THE SHORTHORNED GRASSHOPPERS                                        61

  THE LONGHORNED GRASSHOPPERS                                         81

  PRETTY KATYDIDS                                                     94

  THE CRICKET-LIKE GRASSHOPPERS                                       99

  THE CHEERY CRICKET PEOPLE                                          101

  A LARGE FAMILY                                                     107

  THE GREAT BUG FAMILY                                               115

  THE WATER BOATMAN                                                  116

  THE FUNNY BACK-SWIMMERS                                            124

  THE GIANT WATER BUG                                                125

  LITTLE MRS. SHORE BUG                                              127

  THE AIRY WATER STRIDERS                                            127

  A QUEER FELLOW                                                     129

  THE WELL DRESSED LACE BUG                                          132

  A BAD BUG                                                          133

  THE TROUBLESOME RED BUG                                            135

  THE RAVENOUS CHINCH BUGS                                           138

  THE WELL PROTECTED STINK BUG                                       139

  THE LOUSE                                                          142

  BIRD LICE AND BOOK LICE                                            142

  FRIEND CICADA                                                      143

  THE ODD SPITTLE INSECT                                             152

  PRETTY LEAF HOPPERS                                                154

  THE COMICAL TREE HOPPERS                                           157

  THE JUMPING PLANT LICE                                             157

  THE APHIDS                                                         158

  SCALE BUGS                                                         165

  THE HORNED CORYDALUS                                               175

  FAIRY LACEWING                                                     183

  THE ANT LION                                                       187

  THE LITTLE CADDICE FLIES                                           190




  ~ODONATA~

  ~EPHEMERIDA~

  ~PLECOPTERA~

  ~THYSANURA~

[Illustration]




OUR PRETTY DRAGON FLIES


Come, children; come with me.

Come to a pond I know of.

See how the water shines in the sun.

Over there is an old log lying on the edge of the pond.

It is covered with green moss, and a green frog is sitting on one end of
it.

Let us go and sit on the other end.

Goop! he says, and--plump! he has jumped into the water.

That is too bad, frog; we did not mean to disturb you.

How pretty it is here!

See the pickerel weed growing out in the water with its arrow-shaped
leaves, and its spikes of purple flowers.

See, down in the water are little fish, and very likely pollywogs are
there too, and lots of queer little things.

But who is this darting over the pond?

Ah, we know you.

You are our queer little, dear little old dragon fly.

Look, children; see the dragon flies darting about like flashes of light
in every direction.

They are having such a good time.

Whizz! One flashed right past Mollie's ear.

[Illustration]

Pretty people, I wish one of you would come and sit by us a little
while, so we could get a good look at you.

What is that, Ned? You have found a large one lying on the ground?

Sure enough; it is a beauty too, with a green body and silver wings.

Something seems to be wrong with it; it does not fly nor try to get
away.

What a big one it is!

My! my! what eyes!

Don't crowd, Amy; let little Nell see too.

What is that you say, Richard? "It catches mosquitoes and gnats and
flies and other insects while flying."

Yes, and that is why it has such big eyes. We should need big eyes
ourselves if we were to spend our time chasing mosquitoes.

Two eyes you have, little dragon fly, like the rest of us, but your eyes
are not like ours.

No, indeed!

Each of your big eyes is made up of a great many small eyes packed close
together.

Do you know, children, that some of the largest of the dragon flies have
as many as twenty thousand facets, or small eyes, in each large eye?

Think of it! Forty thousand eyes in one little dragon fly head. It
_ought_ to see well.

These facets are six-sided, excepting those along the edge, which are
rounded on the outside. You cannot see their real shape without a
microscope, they are so small. But here is a picture of some facets as
they look under the microscope.

[Illustration]

Eyes like these, made up of many facets, we call compound eyes.

All grown-up insects have compound eyes, though not many have as large
ones as the dragon fly.

Only insects that chase other insects or that need to see in the dark
have very large eyes.

See what a big mouth the dragon fly has. Its jaws do not show unless it
opens its lower lip, which fits over its mouth like a mask.

I should not care to have it bite my finger.

It could not hurt very much, and its bite is not poisonous, still I
shall handle it carefully.

Some call the dragon fly a darning needle, and say it sews up people's
ears when they lie on the grass. This is not true. It does not sew up
anything. It has nothing to sew with.

[Illustration]

Why should it want to sew up people's ears, anyway?

It does nothing unpleasant but bite fingers, and it never goes out of
its way to do that.

If we let it alone, it always lets us alone.

It is our good friend because it catches mosquitoes. For this reason it
is sometimes called mosquito hawk.

We should never kill a dragon fly.

Sometimes it is called a spindle, I suppose because it is long and
slender like a spindle.

Down South the colored people believe the dragon fly brings dead snakes
to life, and they call it snake doctor.

In some places it is called snake feeder.

But it has nothing to do with snakes, dead or alive.

The French have given it a pretty name, _demoiselle_, or damsel fly, and
that is quite deserved, for the dragon fly is a graceful little
creature, as pretty as pretty can be.

[Illustration]

See, sticking out of the front of its head are two little feelers, or
antennæ, as we must call them.

They are very short, but it does not need long ones.

Insects smell with their feelers, you know, but our dragon flies see so
well they do not need to smell very well, I suppose.

See how it can turn its head around. That is because it has a little
short neck between its head and its body.

Its eyes, its mouth, and its antennæ belong to its head.

Of course our demoiselle can fly well; one need only look at those wings
to know that.

To fly well is quite as necessary to one of its habits as to see well.

What would be the use of seeing an insect if it could not fly fast
enough to catch it?

We all like your pretty wings, little dragon fly; they look like glass
and they shine so in the sun.

How fast the wings can move! See that dragon fly skimming over the pond;
its wings make a whizzing sound as it darts about.

[Illustration]

Why does it zigzag so?

Why doesn't it fly in a straight line?

Yes, Mollie, you are right, it goes zigzagging along after insects.

It sees one it wants off at one side--whizz! around it turns after it.

Shouldn't you like to fly like that, children?

And yet we would not be willing to exchange our arms and hands for
wings.

We could not whittle a stick nor write a letter if we had only wings.

In fact we could not do most of the things we now do.

I am glad I have my hands.

We are glad, too, that the dragon flies have their pretty, swift wings.

They have four wings, all nearly the same size and shape, you see, and
they are all stiff and shining.

Some dragon flies, like this one we have picked up, always keep their
wings spread out.

[Illustration]

But over there, standing on the end of that stick, is another kind.

When it rests its wings are folded together.

What a pretty one it is! Do you see it?

It is small, but so pretty.

It is bright blue and shines as though it had been polished.

Sometimes birds catch these smaller dragon flies, though birds, as a
rule, are not fond of any of them.

They are so hard and their wings are so stiff I should think a bird
might almost as well swallow nails.

I am sure no bird could swallow one of the big ones, wings and all!

But frogs can.

A frog will try to swallow almost anything it can catch, and it watches
for the dragon flies when they come to lay their eggs in the water.

Suddenly it jumps out, and away goes poor dragon fly into that great
wide frog-mouth.

[Illustration]

Now look at the legs of the dragon fly. It has six.

Every dragon fly has six legs.

They are rather short and small for so large an insect, but that is
because it does not need large, strong legs.

You never saw a dragon fly dig a hole, or run, or even walk, did you?

Their legs are not arranged for walking. All six of them are directed
forwards as though they were reaching out after something. And so they
are--reaching out after insects.

Dragon fly catches his prey while he is flying, and he grasps the
insects with his feet.

He snatches one, and then what?

Does he sit down somewhere and eat it?

Not he, he is far too hungry for that; he continues his swift flight,
and as he flies he eats.

As soon as he has finished one fly or gnat, zip! he snatches another.

He has an insatiable appetite, consuming hundreds of insects in the
course of a day. Nor does he confine his attention to flies and gnats
and mosquitoes and such small fry. He catches what he can. A large
dragon fly will even gorge himself on one of the large-sized
butterflies, and one has been seen calmly chewing away at an enormous
wasp!

No, indeed, Mabel, the dragon fly does not eat the wings of the
butterfly, it eats only the soft body.

Probably nothing eats a butterfly, wings and all. Birds and insects
sometimes catch butterflies, and you often see the bright wings lying on
the ground. The wings of insects are not worth eating, and are almost
always cast aside by the creatures that eat the insects.

Besides catching insects with their legs, the dragon flies cling fast to
things with them, but when they wish to move they do not walk, they fly.

Yes, indeed, Frank, you are right; their legs are jointed.

That is so they can move them easily and fold them up when they want
to.

They would find it as hard to get along without joints to their legs as
we should.

Wouldn't we be stiff if we had no joints!

See, the legs and wings are fastened to the middle part of the body, the
_thorax_, we call it.

All insects have the legs and wings attached to the thorax.

The rest of the body is the abdomen. See how long it is.

[Illustration]

It is the long abdomen that gives the dragon fly its name of spindle, I
suppose.

The abdomen is jointed, and it can curl up.

All grown-up insects have a head, a thorax, and a jointed abdomen.

       *       *       *       *       *

What are you looking at, Charlie?

Something moving in the bottom of the pond?

Let us get it out.

Here, we will dip it out with this cup.

What a lot of stuff!

Sticks and mud--and--what is that?

Something alive, surely.

Let us put some clean water in the cup and examine what we have found.

My! my! what a queer little thing!

What do you suppose it is?

Ah, I know now, but I do not think you could ever, ever guess, not if
you tried a week.

It is a young dragon fly!

It does not look much like its shiny-winged parents.

It looks like I don't know what, with a face like--well, when you look
right in front of it, like a pug dog.

Queer! Well, I should think so! What is that, Amy? Am I sure it is a
dragon fly?

Yes, there is no mistake; a dragon fly one day dropped an egg in the
pond, and out of it hatched--this.

[Illustration]

It will some day become a shiny-winged dragon fly and catch mosquitoes.

We will call it larva, and we will watch it a little while.

Look and see if it has a head, a thorax, and an abdomen.

Are there antennæ on its head? And has it eyes?

If you were to look at its eyes with a microscope, you would find that
they are made of six-sided facets, like the eyes of the grown-up dragon
fly.

They are compound eyes, but they are not as large as the eyes of the
grown-up dragon fly.

How many legs has it? What are its legs fastened to?

Yes, Nellie, thorax is right.

Its six legs are fastened to its thorax. I am glad you remembered
thorax.

Has it a jointed abdomen? and has it wings?

Look! did you see that?

It opened its innocent-looking face all of a sudden, just darted it out
into a long-handled spoon, with hooks at the end, and hooked up that
little grub.

Now it is holding the grub on the hooks in front of its mouth and eating
it as greedily as if it were half starved.

[Illustration]

So that is why its face looks so queer.

It is its long under lip all folded up in front like a mask that makes
it look like a pug dog.

When it pleases it darts out that lip, and any unlucky insect or snail
may fall a prey to its greedy appetite.

It is said that the larvæ of some dragon flies even eat pollywogs and
small fishes.

Ned wants to know if "larvæ" means the same as "larva."

Yes, it is the plural form of the word. When we speak of only one we say
"larva"; when we speak of more than one, instead of saying "larvas," we
say "larvæ."

The dragon fly larvæ are terrible gluttons, and hidden under the mask
are strong jaws for chewing up their prey.

Their legs are quite large and strong, too, for they crawl about the
bottom of the pond or up the stalks of the plants.

They do not move about very fast, but they do shoot out that under lip
very, very, _very_ fast indeed, so good-by to any little live thing in
the pond that comes within reach of it.

The dragon fly larvæ do not all look alike. They are different in the
different species of dragon flies, and, like the rest of us, they change
as they grow older.

Yes, May, you can keep the dragon fly larvæ until they change into
dragon flies.

You must supply them with fresh water and with enough to eat.

And you must put a net over the bowl or aquarium in which you keep them,
otherwise as soon as they are able they will fly away.

How can they fly without wings?

Oh, but they are going to have wings. You know they are young dragon
flies in spite of their strange appearance.

Be sure and feed them enough, or else they will eat each other, and that
would be a pity; and be sure there are some water plants for them to
hide under and crawl upon.

You can give them a little fresh fish or a tiny bit of very fresh meat,
though they like best the living things they find in the bottom of the
pond.

[Illustration]

When the dragon fly larva first hatches it is very small and its legs
are rather long and spidery, but it eats and eats and eats,--my, how it
eats!

And it grows and grows, and one day it finds its skin too tight.

A tight skin must be rather uncomfortable.

But the larva does not care much for its skin.

It merely splits it open down the back and pulls itself out.

Perhaps you think it must be yet more uncomfortable to be without a
skin.

But it is not without a skin. It is covered by a new and soft one that
soon hardens, and that is larger than the old one.

It wriggles out of its old skin as though it were an old coat, and
leaves it clinging to the weeds in the pond.

Sometime you may find these cast-off dragon fly overcoats.

After it has shed its skin the dragon fly continues to grow. It keeps on
growing until it has outgrown its new skin.

Then what do you think it does?

Yes, Charlie, that is right, it sheds this skin too.

[Illustration]

When it sheds its skin we say it moults.

It moults several times, and at last little short wings appear. At first
it has no wings at all, you know.

Amy wonders how the larva breathes under water.

Ah, Master Ned, you are laughing too soon. You think insects do not have
to breathe, but you are very much mistaken, sir.

Insects do have to breathe.

They would die if they could get no air to breathe.

Some of the dragon fly larvæ have an odd arrangement for breathing under
water. They have a sort of syringe in the end of the body, and there are
breathing pores or gills in the syringe.

The water goes in and out of this syringe, and the larva breathes as the
fish does, by means of its gills.

Yes, May, its gills are in its syringe, which seems very odd,--you see
the dragon fly larva breathes at its tail end instead of at its head
end.

Mollie thinks it is an upside-down, inside-out sort of a creature
anyway. But it knows what it is about.

Ned wants to know how it can get any air to breathe when it lives under
water.

The truth is, there is always air mixed in with water, and it is this
air the larva breathes when the water goes in and out of the syringe.

It uses the syringe for another purpose too. When it pleases it can
shoot out the water with great force, and thus propel itself quite a
distance.

By means of the syringe it can leap through the water faster than it can
move by its slow-going legs.

Mollie wants to know if we can see the syringe.

No, it is inside the body.

But there is a kind of dragon fly that has a pair of gills outside, at
the end of the abdomen, instead of the syringe inside.

The best I can do is to show you a picture of one. Some day we may find
it in the pond.

[Illustration]

Those two feather-like parts at the tail end are gills.

Yes, John, it can propel itself through the water by rowing, as it were,
with these gills.

There are some species of dragon fly larvæ that swim by moving the tip
of the abdomen from side to side, as a fish moves its body when it
swims.

But now let us return to our funny larva that lives at the bottom of the
pond. It stays down there, eating and growing and moulting, for nine or
ten months or even longer; then something very wonderful happens.

It suddenly feels a great desire to get up to the top of the pond.

[Illustration]

It climbs up a weed or a stick until it is clear out of the water.

Then its skin splits down the back for the last time, and out there
pulls itself, not a larva, but a weak-looking dragon fly, with soft and
flabby little wings.

Now is its hour of danger, and now is the time for such birds as like
the taste of young dragon flies to help themselves.

Catbirds seem to have a special fondness for these helpless insects, and
have been known to eat them before the flabby little wings had grown
stiff.

If the birds do not find the newly emerged dragon fly, it remains
motionless an hour or so, but it does not remain unchanged.

Its wings stretch out and harden.

Bright metallic colors begin to play over them and over its body; and
all at once--off it darts, away and away, glittering in the sunshine, a
swift, beautiful winged creature.

Towards the end of summer you will often see dragon flies darting about
in every direction.

They seem to come in swarms and I think they usually come where there
are ponds or marshes, for in such places there are many gnats and
mosquitoes.

Mollie wants to know why it would not be a good plan for people who live
where there are many mosquitoes to raise dragon flies?

That is a very sensible idea, Mollie, and it has been tried.

Yes, indeed; some men once collected dragon fly larvæ, and took care of
them until they changed into dragon flies.

Then what do you think happened?

As soon as they got their wings, away went those dragon flies,--away
and away, without stopping to catch a single mosquito for the men who
had taken the trouble to raise them.

The dragon flies will not stay at home.

They fly so fast and so far there is no use raising them.

They are among the swiftest and strongest of insects.

How do the larvæ get in the ponds? Frank is asking.

I will tell you what I know about it.

[Illustration]

The winged dragon flies mate, and the female then drops her eggs in the
water or lays them on twigs in the water, where they hatch out into
larvæ.

The dragon flies have to be very careful when they go close to the water
to lay their eggs.

You all know why.

Yes, it is because the frogs are on the watch to catch them.

[Illustration]

The mother dragon fly knows the larvæ have to live in the water, and so
she takes pains to put the eggs there; sometimes she even crawls down
under the water on stems of plants to lay her eggs. Isn't she a wise
little mother?

There are a good many species of dragon flies.

Some are large and some are small.

Some are bright and some are dull.

There are black ones and bright blue ones, or green ones with blue eyes.

Some are marked with red and yellow.

They are a very gay family.

The dragon fly family is also a very old one.

Indeed, it is one of the oldest families on earth.

Long before there were bees or butterflies or dogs or horses or human
beings, there were dragon flies.

Don't you suppose that may be why the dragon fly is such a
strange-looking insect?

It does not look like other insects; it is very old-fashioned, like the
pine trees.

Pine trees, too, belong to a very old plant family that lived long ago,
before there were oaks or maples, or other trees that shed their leaves.

Now we must go home.

Good-by, green frog, you may come back to your log now.

Good-by, pretty dragon fly people, we shall never forget you.

Good-by, pleasant pond and moss-grown log, we hope to see you often
again.

[Illustration]




THE FAIRY MAY FLIES

[Illustration]


Come, children, and see! Hundreds and hundreds of them are dancing
about.

What are they? Yes, May, they do make us think of the dragon flies, but
they are like fairy demoiselles.

They are the May flies, fairy ships sailing in the sea of air.

See how they are tossed about.

Many have fallen to the ground, which is covered with them.

They live but a day, or sometimes only a few hours, and so they are
called day flies, and also ephemeræ, which means short-lived.

They have eyes, as you can see, little round eyes, but their mouth is so
tiny they cannot eat.

Strange little beings to come into the world so helpless!

How different from the strong, fierce dragon flies!

See their dainty little legs. Six, you see, and legs and wings grow out
from the thorax.

Have they an abdomen?

See the long threads at the end of it, they look like slender tails. How
they spread these threads out as they fly!

They have four wings, but the wings are not shaped like those of the
dragon fly, and they are very much more delicate.

[Illustration: DRAGON FLY WINGS.]

[Illustration: MAY FLY WINGS.]

Yes, May, I agree with you, they look like fine lace.

The fore wings, you see, are larger than the hind ones.

Richard asks, "Where do May flies come from? and why are they called May
flies?"

Now, Richard, one question at a time, if you please, and the last shall
come first because it is easier to answer.

They are called May flies because they often come out in the month of
May, though sometimes not until June, and some species are as late as
July in appearing.

[Illustration]

We shall have to look into the ponds and little streams to discover
where they come from.

See, John has scooped up some little speckled grubs out of the mud. Is
it possible that _they_ are the larvæ of our fairy May flies? _They_
have a mouth!--see what big jaws for such little creatures.

And what do you suppose they eat?

No doubt they, too, live on animal food.

No doubt they move about in the mud and catch what they can.

You see, John had to dig them up; they like to burrow in the weeds and
mud, and some of them even make tunnels of mud in which to protect their
soft bodies. Their short, stout legs enable them to dig well.

Their bodies are soft, but their jaws are not. O dear, no!

[Illustration]

The grown-up May flies mate, and then the female drops her eggs on the
surface of the water. When she does this a fish will very often jump up
and seize her, for fish are very fond of May flies, and lucky are the
May flies to escape these ravenous enemies.

The eggs are heavy and sink to the bottom, where they hatch into these
queer-looking larvæ that eat and grow and shed their skin just like the
dragon fly larvæ.

Those brushes along their sides are the gills they breathe with.

See the gills moving swiftly back and forth; they look as though the
larva wished to swim with them, but this is not why it moves them so
constantly.

The continual motion of the gills stirs up the water and keeps our larva
supplied with fresh air.

Nellie is asking what gills are.

Well, gills in fishes and in such insects as have gills, and in crabs
and lobsters and other creatures that live in the water, are parts that
often look like fringes or flat plates.

The gills of fishes have a great many blood vessels running through
them. The walls of these blood vessels are very thin, and the oxygen
from the air that is in the water passes into the blood that is in the
gills, and then this blood, all full of oxygen, circulates through the
fish's body.

You see in fishes the blood vessels come into the gills and get the
oxygen.

In insects it is different. There are air tubes running like tiny pipes
all through the gills and into the body of the insect. The oxygen of the
air that is in the water passes out through the walls of these tubes
into the blood of the insect.

Yes, John, in fishes the blood comes to the air, in insects the air goes
to the blood. The air passes into the air tubes of the insects, and thus
is carried all through their bodies.

The blood takes the oxygen out of the air.

Without oxygen in the blood no animal could live.

Now let us go back to our May flies. They remain in the larval state a
year, and some species remain two years. Think of living in the mud for
two long years!

In the mud they creep about, eating, eating, eating. Then some summer
day they leave the mud and swim to the surface of the water.

Pop! they are gone.

They were so quick about it we could not see what happened.

The larval skin burst open and forth leaped the May fly, like a winged
fairy from a prison cell.

They do not come out slowly and wait for their wings to dry like the
dragon fly.

[Illustration]

They spring out all of a sudden and fly away, leaving their cast-off
skin in the pond.

Unless their motions were quick they might be snapped up by the fish
that are so fond of them.

But though they seem to emerge thus quickly into perfect winged May
flies, they are not quite done with infancy. They are still wrapped
about by a very delicate skin that they have to get rid of. So they fly
to a bush near the water and stay a little while until this skin splits
and comes off, and they are free.

In spite of their quick motions when they spring from the water, many of
the May flies fall back into it and are caught by the fish.

[Illustration here, as the text is broken]

It is said that the trout become fat and good-flavored when the May
flies emerge, they eat so many of them. And what the fish do not catch
the birds try to. Swallows and other insect-loving birds have a glorious
feast when the May flies come out. For a season they live in the midst
of more delicacies than they can possibly use.

Fish like the May fly larvæ, too, which is probably the reason the larvæ
have learned to live in the mud, out of reach.

Fishermen dig up the larvæ for bait, so you see the May flies have a
hard time to get safely through the world.

But in spite of difficulties a great many of them live, and some summer
day out they come trooping.

They spring all at once from the surface of the water as by magic,
hundreds and thousands, yes, millions of them. They fill the air, they
cover everything.

The great naturalist Swammerdam, who was the first to make a thorough
study of the May flies, thus tells us how they appeared in France one
year:--

"I then saw a sight beyond all expectation. The ephemeræ filled the air
like the snowflakes in a dense snowstorm.

"The steps were covered to a depth of two, three, or even four inches. A
tract of water five or six feet across was completely hidden, and as the
floating insects slowly drifted away, others took their places. Several
times I was obliged to retreat to the top of the stairs from the
annoyance caused by the ephemeræ, which dashed in my face, and got into
my eyes, mouth, and nose."

These swarms of May flies appear only from three to five days at a
time.

Wherever there are streams there are May flies, and the canals of
Holland make good breeding places for them; no wonder, then, the Dutch,
who you know live in Holland, have a saying, "As thick as May flies."

Although so many of the May flies perish at once, multitudes of them
drop their eggs into the water to renew the race of May flies.

Is it not wonderful that after so long a period of creeping about in the
mud as larvæ, these graceful and beautiful little creatures have but a
few hours in which to dance joyously about in the upper air on wings of
gossamer? Some, indeed, live less than an hour, and some, that come out
in the evening, finish their dance of life and perish before sunrise,
without ever having seen the beautiful daylight.

Yes, strange little beings are they.

They do us no harm and we should not kill them.

Let them live their short lives and be happy.




THE STONE FLY FOLK

[Illustration]


John has been fishing.

What do you think he caught?

Nary fish, my dears, but a goodly number of stone flies, which he has
brought to show us.

Yes, Mollie, they do remind us a very little of our May flies, only, of
course, they are many times larger.

It is rather a clumsy creature in spite of its large wings, and John
says he had no trouble whatever in catching it.

See, it has four wings, and the hind ones are the larger.

Yes, May, they fold up in plaits, like the sticks of a fan.

See its long antennæ and its compound eyes. Its eyes are not so large as
are those of the dragon fly. It does not spend its time pursuing other
insects, but is more like the May fly after it gets its wings.

Yes, Ned, it lives longer than the May fly, but it does not live very
long, and it eats little.

It is a pretty little gray thing as it rests on the side of John's box,
with its wings folded like a gossamer cloak over its body.

[Illustration]

It lays its eggs in the water, and out of them hatch little six-legged
larvæ that are not troubled by want of appetite. If the winged stone fly
does not eat, its larva does; it is like the other larvæ we know, always
devouring something.

[Illustration]

Yes, Charlie, it feeds on living creatures, greatly relishing the larvæ
of the May flies, or any other luckless insect infants it can capture.

It grows fast and moults several times, and when winter comes it hides
away, only to come forth at the first breath of spring and continue its
eating.

Like other larvæ that live under water, it does its breathing by means
of gills, and these gills are in little tufts just above the base of
each leg.

It lives under stones, which is why it is called the stone fly, and it
slides quickly around a corner when you lift up its stone.

Fish are very fond of it, and hunt it as eagerly as it hunts larvæ.
Since it makes good bait for brook trout, its life is always in danger.
It finishes its growth in early summer, and emerges from its larval
skin as a perfect winged insect.

Yes, indeed, John, you can often find dozens of the cast-off skins of
the stone flies along the brook sides in the month of June.

The stone flies are harmless little people, and we should never kill one
needlessly.

[Illustration]




THE SILVER FISH


May has something here for us to look at. She says it is a slippery
rascal. Let us see it. Oh, yes, you have it in that little box. See, the
box has a glass top. May cut the top off the box herself, and fastened
in a little pane of glass so we could see the rascal without danger of
its escaping.

[Illustration]

Pretty rascal! Like a little silver fish slipping about the box.

Yes, Charlie, it is called the silver fish. A land fish? Why, yes, it
would be a land fish if it were a fish at all. But in spite of its name
it is no fish. It is covered with shining scales, though, that are very
much like fish scales, and it is shaped a good deal like a fish.

Oh, yes, it is an insect. You see it has six legs. But it has no wings.

No, it is not a young one.

It never will have any wings, no matter how old it may get to be.

It is flat, you see, and its scales make it very slippery, so that it is
hard to catch and yet harder to hold on to after you have caught it. It
goes flashing about like a little silver dart, and it loves to eat
starch.

That is why May calls it a rascal. It eats the starch from the paste
that fastens on her wall paper, and from book-bindings, so you see it
makes things fall to pieces. But my! what a pretty rascal it is! Besides
its name of silver fish, it is also called fish moth, though it is not a
moth at all. It is also called bristle-tail, because of the long,
bristle-like parts at the end of its body; and in some places it is
called a slink, because, you know, it loves dark places, and when you
uncover it in the daytime, it slips around a corner into the dark again.

Yes, it seems to slink about as if it were ashamed of itself, but it is
not ashamed; it does not like the light, and it does not like us to see
it.

Perhaps it is afraid of us.




ORTHOPTERA




THE OLD COCKROACHES

[Illustration]


Children, here is a cockroach.

It was one of the first insects that came to live on the earth;
cockroaches were here before people, and they are here yet.

You do not think it is pretty?

Neither do I.

I don't know anybody who thinks a cockroach pretty.

Oh, no, it won't bite you.

It will only get into your pantry and eat your food.

It will walk around in the night and frighten you if you go suddenly
into the kitchen.

It will not frighten you on purpose, but when it hears you coming, it
will run, and then maybe you will scream and run too.

What is that, May? You've a good mind to scream and run as it is?

Very well, scream and run if you want to; the cockroach won't care.

We do not often see these big black fellows in the North, but sometimes
we do. Down South cockroaches seem to be everywhere.

What, May? You are never going South, then?

Well, you do not need to go; the cockroaches won't care.

They have little heads and long antennæ, like threads.

What is that, May? You don't care anything about their heads? You don't
want to know anything about cockroaches?

Oh, yes, you want to know about cockroaches. Remember how old they are.

They have six legs, you see.

You don't care how many legs they have?

Oh, yes, you do. They could not walk if they had no legs.

You wish they couldn't walk?

Dear me, May; you don't seem to like cockroaches.

Poor old cockroaches.

[Illustration]

Think how old they are.

What is that you say? They are old enough to know better?

Why, May, what have they ever done to you?

Nothing, only you don't like them?

Well, well, they don't like you, either. Poor old cockroaches; nobody
seems to like them.

Perhaps they don't care.

Will you let me tell you where they came from?

They do not belong to this country.

Their natural home is tropical Asia.

You see, about four hundred years ago, the ships that bore fruits and
other merchandise from India and other warm countries in Asia, bore, as
well, a number of little, flat, reddish brown stowaways.

[Illustration]

Stowaways, as you know, are people that do not buy their tickets, but
that hide among the ship's cargo, and so get free transportation to
other countries.

Well, these little flat stowaways were not human beings, they were
insects. Yes, May, they were the cockroaches.

When they landed from their hot land of Asia in cold England, they must
have wondered what was to become of them. Many of them no doubt died,
for they cannot stand cold weather at all; but some of them were
carried, with the fruits and other things, quite unintentionally, of
course, for nobody guessed they were there, into warm cellars and
kitchen cupboards.

_Then_ they felt at home!

They knew better than to leave the cosey nooks where they could hide
away and sleep all day, and when they came out at night would find a
delicious supper close at hand.

They are great eaters, you know, so what with the good things in the
pantry and the warmth of the kitchen quarters they prospered wherever
they could find a kitchen to live in.

Soon they spread all over the large cities of England and finally into
even remote country districts.

Of course they found their way to the United States of America, and in
many houses in the North they have taken lodging. But down South, where
it is always warm enough, they have prospered greatly, and they are
there in far greater numbers than in the North.

Besides, there is a large American cockroach that belongs to tropical
America, but that has found its way pretty well over the country. And
there are cockroaches that live in the woods, some of them coming in the
night to visit our houses and help themselves from our pantries.

Yes, Mollie, the cockroaches eat almost anything they can find, and what
they do not eat they spoil by an ill-smelling liquid they give out when
disturbed.

It is this liquid that makes the cockroaches so very offensive to us.
We cannot bear to touch one because of it.

Cockroaches eat one variety of food that nobody objects to their having.
They are fond of bed bugs and greedily devour them.

Besides the large, dark, reddish brown cockroaches there is a little
tan-colored fellow that is often very troublesome.

[Illustration]

It is not a native of this country, but is supposed to have been brought
to England by soldiers from the Crimea, and later it found its way to
America.

We call it the croton bug, but it is not a bug at all, it is a
cockroach.

It is particularly numerous about water pipes, and, like the rest of the
cockroaches, it hides in the daytime.

At night out troop crowds and crowds of the little tan-colored water
bugs. They run about the floor, and over the pantry shelves. They get
into everything they can find, and have a beautiful time.

They are funny little fellows, and if they were not so troublesome, we
might admire them.

How they can run!

All the cockroaches run very fast, so that it is hard to catch one. And
they are hard and smooth, too, which makes it yet more difficult to
catch them. They are well made to escape their enemies, and they are so
flat they can hide in cracks or almost anywhere.

No, May, they do not fly very much. You see this one has short wings. It
is a male cockroach. The female of this species of cockroach has no
wings at all, only little hints of wings, as it were.

Such little useless wings we call "rudimentary" wings.

John says he thinks that is a long word for short wings.

Yes, but it is not a hard word,--ru-di-ment-ary, see if you can remember
it.

The croton bugs have longer wings and they sometimes fly.

If you were to spread out the wings of a cockroach, you would find it
had four.

What is that, May? You wouldn't spread them out for anything?

Yet wise men have been very much interested in our poor, ill-smelling
old cockroaches, and have studied carefully all about them.

[Illustration]

If you dislike to touch the cockroach so much, perhaps you will look at
this picture of a croton bug.

See, the upper wings are different; the cockroach does not fly with
them, he merely uses them to cover up the under wings, and we call them
wing covers.

It is the under wings the cockroach flies with.

Cockroaches may not be pleasant, but who can say they are not
interesting?

What other insect lays its eggs in little bandboxes?

Here is one of the little boxes, shiny and hard.

[Illustration]

This little case is at first a sticky substance that soon hardens. The
eggs lie in it side by side in two rows.

These cases remain attached to the abdomen of the female cockroach until
the eggs are all laid. Then the case falls off, and soon out runs a
crowd of infant cockroaches.

[Illustration]

The case is something like a satchel that shuts with a spring. The
youngsters are packed close together, side by side, with their heads
towards the mouth of the satchel.

As soon as one hatches it pushes open the side of the case and creeps
out. Then the case springs together again to protect the rest of the
brood.

They are funny fellows when they first come out, little and
white-looking. But they eat and grow of course, and shed their skins,
and after each moult they become darker in color.

Now, do look again at this cockroach I have taken such pains to catch
for you and put into the tumbler.

I think even May will own that it has a cunning little head.

See it turn its head around to look at us.

After all, the cockroach is a knowing little fellow.

This one is hungry; it has had nothing to eat for some time. We will
give it this crumb of cake.

Be careful, or it will get away; it can run very fast, and it is very
quick, you see, in all its motions.

Ah, it is examining the crumb with the tips of its long antennæ.

See how daintily it touches the crumb.

It can smell with its antennæ, you know.

Now it has decided the cake is good to eat.

See how eager it is!

[Illustration]

It almost stands on its head to reach just the part it wants.

John says he does not understand how insects smell with their antennæ.

I can tell you a little about it, John.

If you look at one of the cockroach's antennæ under the magnifying
glass, you will see it is made up of a good many short pieces, or
segments, as we call them, fastened together end to end.

Yes, Mollie, that is why it can move about so easily. It can curl up
like a whiplash, you see.

Next the head is a round segment that fits into a socket.

[Illustration]

Double up your right fist and fit it into the half-closed palm of your
left hand.

There! That is like the ball-and-socket joint.

You see you can move your fist around in all directions.

The insect can move its antennæ in all directions because they are
fastened to its head by ball-and-socket joints.

On the segments of the antennæ, particularly towards the tip, are little
dots.

You cannot see the dots without the help of a strong microscope, but
they are there.

These little dots are sensitive spots. There is a nerve coming from the
insect's brain to each dot.

Some of the dots are sensitive to odors, just as the nerves of our nose
are sensitive to odors.

May thinks it is very funny that the insects smell with antennæ instead
of with noses.

The insects, no doubt, would think it very funny for us to smell with,
noses instead of with antennæ, if they thought about it at all.

The little dots on the antennæ are extremely sensitive to smells. They
are often much more sensitive than our noses.

Put a bit of food at some distance from a hungry cockroach, and it will
not be long before a pair of long, sensitive feelers will come waving to
and fro out of some dark corner.

[Illustration]

Little Mrs. Cockroach has smelled the dainty morsel, and, as soon as it
is dark, out she will run, her feelers moving eagerly this way and that,
until she has found it.

Yes, May, insects also feel with their antennæ. That is why the antennæ
are often called "feelers."

There are other dots on the segments that are sensitive to touch.
Sometimes there are tiny hairs on the antennæ, also sensitive to touch.

The little fellows feel and smell, yes, and oftentimes _hear_ with their
antennæ.

Many insects have spots sensitive to sound on the antennæ.

Yes, indeed, May, it is wonderful that such tiny threads as an insect's
antennæ should hold so many kinds of sensitive spots.

An insect's antennæ are among the most wonderful things in the world.

And _I_ think a cockroach, in spite of its bad reputation, is a very
wonderful little fellow.

What is that, May? Our cockroach is drawing one of its antennæ through
its mouth?

Ah, yes, see it clean its antenna, children.

It seems to nibble at it as it draws it through its mouth.

Insects are very careful to keep their antennæ clean.

It would not do to let these sensitive spots become covered with dust,
you know.

[Illustration]




NEIGHBOR WALKING STICK


Isn't this a pretty place to sit down and--

"Ouch! ow! ow! ow!"

Why, May, what is the matter?

Anybody would think you had seen a cockroach.

What has she found, John?

[Illustration]

Oh, it is a walking stick!

Why do I call it that?

Look and see.

Does it not look like a stick?

And does it not walk?

Then why is not walking stick a good name for it?

May thinks its legs look like a collection of pine needles, for they are
green and flat on the upper joints.

It is as pretty as it is queer, with its brown body and its green legs.

This is the male walking stick; the female has brown legs. She is brown
all over, just the color of dried leaves, and she is not as slender as
her mate.

Mollie thinks it is the long and slender thorax that makes the walking
stick look so queer.

See its thorax. Its six legs are attached to its thorax, which is as
long and as slender as the abdomen.

John thinks it looks queer because everything about it is so long and
slender.

[Illustration]

Long antennæ, long legs, long thorax, long abdomen--that is Mr. Walking
Stick.

Sir, why do you have such long antennæ? Can you hear and feel and smell
extra well because of them?

I wish you could tell us about them.

Now where is it?

Oh, yes, it is standing on that brown twig. It is so nearly the color of
the twig and so much the shape of a little stick itself, that it is not
easy to find it.

There, it is walking off again.

[Illustration]

It has a good name, for I am sure that if a stick tried to walk, it
could not do it more awkwardly.

See now, what it is doing, hanging by one foot from that twig.

How still it is.

Who would imagine, seeing it thus for the first time, that it was a
living creature?

The walking sticks feed on leaves, and I suppose their queer shape and
their color protect them from being eaten by birds.

A bird would have to be very close to a walking stick to tell it from a
twig.

The female drops the eggs on the ground, and leaves them to hatch out
and make their way in the world as best they can.

[Illustration]

The young walking sticks look just like their parents, only of course
they are very small, and they are green in color, like the leaves they
eat.

Yes, little Nell, I should like to find some too; they must be cunning
little things.

They eat and grow and moult, and eat and grow and moult, until they are
grown up.

There are a good many species of walking sticks in the world,
particularly in hot countries; and to their family belong the longest of
known insects, some being nearly a foot long. Just imagine a walking
stick a foot long!

And some of them are quite prettily colored, though certain species are
not pleasant to handle, as they give forth a bad-smelling milky fluid
when disturbed.

They are gentle little folk, all of them, and move slowly about over the
leaves and twigs, not wishing to harm any living thing.

Some members of the walking stick family have wings, and these are even
more curious than those that have none.

Their wings and legs are flattened to look like leaves, so that it is
very difficult to find them among the foliage.

[Illustration]

Yes, May, they are also the color of the leaves they live among.

Here is a picture of one that will give some idea of these strange
little people.

We have none of these leaf-like insects in our country, but we do have a
near relative to the walking sticks, though it does not feed on leaves,
I assure you.

How many of you are acquainted with his lordship, the praying mantis?

[Illustration]

Charlie says he has seen these fellows in Kansas, and Nellie says she
has a cousin in the South who has told her about them.

Here is a picture of one; is it not a beauty!

Its wings are green and its body is brown, so that it can stealthily
creep about among the foliage without being noticed.

When at rest it holds its front legs up as though it were raising its
arms in an attitude of devotion.

But not a thought of devotion lies in that cruel little head. There is
only one idea there; and if any unwary insect were to come along, those
devotional arms would be thrust out with incredible rapidity, and the
unfortunate insect clasped tightly in them.

Then the mantis, hugging its prey in the strong trap-like clasp of its
spiked legs, would coolly proceed to devour it alive, eating it as a boy
would eat an apple.

[Illustration]

This praying mantis is called a "mule-killer" in the South, where the
people think the brown liquor it spits out of its mouth, when disturbed,
is fatal to mules.

The mantis is also called a devil-horse, a rear-horse, a camel-cricket,
and many other names inspired by its outlandish appearance.

Some have even thought it looked wise, standing in that knowing attitude
with extended arms, and so it has been called prophet and soothsayer, as
though it could foretell what is going to happen.

Undoubtedly it never foretells anything but the approaching death of
some insect and possibly a coming change in the weather, for insects
often know when the weather is going to change long before we do.

Although our mantes are brown or green, there are a great many species
living in hot countries that are much more brightly attired; and when
you find yourself on a visit to the tropics, you must look for the
flower mantis.

It mimics in color the brilliant hues of the showy orchids in which it
hides.

It does not seem to wear its gorgeous robes from a love for the
beautiful, however, but rather that it may the better lie concealed in
the heart of the gay flowers, to pounce upon unsuspecting insects that
come there for refreshing draughts of honey.

[Illustration]

In some parts of Africa the mantis is worshipped by the natives, and in
France these fellows are believed to point out the way to travellers by
stretching out one leg when questioned.

Its strange attitude, with uplifted arms, has won the mantis regard in
all parts of the world, though the insects it clasps in these uplifted
arms would not be likely to share the good opinion held of this hardy
cannibal.

For it is a cannibal, and enjoys eating another mantis as much as
anything else.

The mantes are terrible fighters, too, and if there is a meeting between
two of them, there is very apt to be a battle in which one is vanquished
and devoured by the other.

Our mantis lays its eggs, thirty or forty in number, on tree twigs, and
they are embedded in a soft substance that soon becomes very tough and
horny. These strange egg-cases of the mantis are easily recognized
because they look as though they were braided on top, as you can see in
the picture.

[Illustration]

Yes, May, the tough covering is to protect the eggs from wet and from
prying birds and hungry insects.

The young mantes are similar to their parents, only they have no wings.
But they hold up their spiny front legs and catch insects, and they grow
and moult in the usual way.

While we have been talking about leaf-like insects and mule-killers our
walking stick has gone off.

[Illustration]

Well, well, let him go, and good luck go with him.

I am glad you like the walking stick, children.

And now, May, let me tell you something.

This queer fellow is a very near relative of your friend, the
cockroach.

[Illustration]




THE GRASSHOPPER TRIBES


Don't you often wonder where they come from? The swarms of grasshoppers
in the late summer?

Charlie says he walked across a field last night where he believes there
were as many grasshoppers as there were blades of grass.

Just think of it! and yet they do not seem to do any harm.

In some places, however, they do a great deal of harm.

They come flying in swarms that darken the sun, and they settle on the
trees and the crops and eat up every green thing. There is nothing a
Western farmer dreads so much as the passing of the grasshoppers.

Grasshoppers are funny little fellows, and we like them--when there are
not too many of them.

Summer would not seem quite like summer unless we heard the grasshoppers
shrilling.

There are a great many species of them, and we have placed them in two
divisions,--The Shorthorned Grasshoppers and The Longhorned
Grasshoppers.

[Illustration]




THE SHORTHORNED GRASSHOPPERS


They have no horns, of course, but some have short antennæ that stick
out like little horns, and those we call shorthorned.

The right name for the shorthorned grasshoppers is locusts.

We call another insect a locust, but the shorthorned grasshoppers are
the true locusts.

Some say it was these locusts that John the Baptist ate with his honey
in the wilderness.

[Illustration]

A good many people in different parts of the world still eat locusts.

They are said to be good food when roasted, but I would rather eat
roasted peanuts.

Come here, little locust, and let us look at you.

Now, stand still, and show us your short "horns."

See its eyes!

Yes, May, they are compound eyes, but I do not know how many facets they
have.

What a funny little rabbit face it has.

See it move its little mouth parts.

It bites bits out of the leaves and chews them up very fast.

Has it teeth? May is asking.

Well, yes, but not like our teeth. Sometime you must see the mouth parts
of the grasshopper under the microscope. They are very interesting.

Mollie says the locust has a cape on.

John says the cape is the top of its thorax.

[Illustration]

Frank has been counting its legs; he says it has six.

See it walk. It uses all six legs to walk with.

But it does something besides walk with its hind legs.

Yes, it jumps with them. How long and large they are! Now watch it jump.

See! It draws those long hind legs close up to its body, then suddenly
straightens them out--and away it goes as though it had been shot from a
spring board.

John says its hind legs work just like a spring, and so they do. It can
leap several times the length of its body. Amy thinks it should be
called a grass-jumper instead of a grasshopper.

Suppose we all look carefully at the locust's long hind leg, segment by
segment.

What, John? You do not know what a segment is?

Well, a segment is the part between two joints. The joints are where
the leg bends, you know.

May proposes that we draw a picture of the long hind leg.

It will be fun to try.

There are two tiny segments close to the body.

If you are not careful, you will find only one.

You must look sharp to see both of them.

How well Charlie has drawn his! He has both the little segments.

[Illustration]

The one next the body we will mark I, and we will call it the coxa.

The next little one we will mark II, and that we will call the
trochanter.

The long, strong one, III, we will call the femur.

The next one, long and narrow, we will mark IV, and call the tibia.

All the rest of the leg, made of several short segments, we will call
the tarsus, and we will mark it V.

Now how are we to remember all those hard names?

Here is a jingle that perhaps will help us:--

  _Coxa_ first, and then _trochanter_,
  Number three the _femur_ stands,
  After this, the long, straight _tibia_,
  And last of all the _tarsus_ comes.

Now let us see who can learn it first.

Charlie says we are taking a good deal of trouble over the hind legs of
a grasshopper.

[Illustration]

Very true, Mr. Philosopher, but let me tell you something.

When we have learned the names of the segments in the grasshopper's hind
leg, we have learned the names of the segments in the legs of all
insects.

You see all the legs are made on one common plan, and it is very
convenient, as you will soon see, to have the parts named.

What a fine set of drawings of the grasshopper's hind leg we have!

Why do you suppose the coxa and trochanter are so small?

Yes, John, it is in order that the leg can move easily.

The grasshopper can turn its leg in almost any direction because of
these small upper segments.

It can put its leg up over its head if it wants to. Next to the little
coxa and trochanter is the longest and largest segment in the
grasshopper's leg; I suppose nobody remembers its name.

Listen to little Nell,--"number three the _femur_ stands."

So it does, and what a very useful femur it is!

If it were not for the long femur and the long, slender tibia, the
grasshopper would not be a grasshopper--it could not hop at all.

Watch the grasshopper, and see how he uses those long segments to jump
with.

[Illustration]

First he draws the tibia close up to the femur--now he is off!

He just straightened those long hind legs out with a jerk, and away he
went!

[Illustration]

What do you suppose the two little sharp spines at the end of the tibia
are for?

What, May? You did not see any spines?

[Illustration]

Look again.

See, Charlie has drawn them very plainly in his picture of the
grasshopper's leg. Mark them _s_, Charlie.

Now we must all look at Charlie's picture.

He says he thinks he knows what the spines are for--they are to keep
the grasshopper from slipping when he makes his leap forward.

I have no doubt Charlie is right.

May wants us to look at the beautiful little hinge x where the femur and
the tibia are fastened together.

[Illustration]

Let us mark it _X_.

See the little ball on the end of the tibia. How well it fits into the
hollow on the end of the femur.

In order to see this hollow or groove, you must look on the under side
of the leg.

Yes, John, it reminds us of the ball-and-socket joint, only this is a
hinge joint, and does not move in so many directions.

The tibia can move towards the femur and away from it on this hinge.

When our little friend gets ready to jump, he draws the tibia close up
to the femur. When he jumps, he pushes the femur quickly away from the
tibia.

If you watch the grasshoppers, you will soon understand just how they
use their hind legs in jumping.

The tarsus bends easily.

It has three joints.

The last segment is a cunning little foot.

What is John doing?

He is looking at the grasshopper's foot through the magnifying glass.
Wise John!

Let us all look.

Yes, Charlie, we will try to draw it.

Mollie has hers drawn already. Do not hurry too much, Mollie. You cannot
draw well if you hurry.

See the sharp claw on each side of the foot.

[Illustration]

Let us mark these claws _a_ and _b_.

Between them is a flat little pad which we may as well mark _c_.

May says her picture looks like a crazy pond lily.

Let us see, May. Well, it _is_ rather funny.

If I were you, I should try again. Any child can learn to draw who will
keep trying.

Touch the grasshopper's foot with the tip of your finger.

How the little foot clings to you!

It clings by the two little claws that have caught in your skin, and
that hold fast.

[Illustration]

What do you suppose the little pad between the claws is for?

It is important, I can tell you.

John says he has heard there is a little pad in the fly's foot that
enables it to walk on glass.

Yes, and it is the same with the grasshopper.

The little pad between the claws is fringed with hairs.

You can see them with a good magnifying glass.

Out of the tip of each hair comes a little drop of sticky liquid.

This fastens the foot to any smooth surface.

Many insects have these sticky hairs on their foot pads.

When a fly walks up a window pane, it does it by gluing its feet, one
after the other, to the glass.

I don't wonder you laugh.

No, Mollie, the glue does not harden and hold it fast.

The fly can easily pull its foot loose. The grasshopper cannot walk on
glass quite as well as the fly. Its foot pads do not cling so well.

[Illustration]

Would you not like to know the name of these curious little foot pads?

We call the foot pad a _pulvillus_.

Some insects do not have sticky hairs on the pulvillus.

There are beetles that simply put the pulvillus so flat against a smooth
surface that it stays there by the pressure of the air above.

Some people think that is the way the pulvillus on the fly's foot acts.

Perhaps it acts both ways, sucking fast and sticking by hairs.

John wants to know if the beetle's pulvillus does not act just like the
"sucker" that boys make.

The sucker, you know, is a round piece of leather with a string attached
to the middle.

When the leather is wet and laid flat on the floor or on a smooth stone,
all the air below it is pushed out, and the air above presses so hard
that a boy cannot pull the leather up from the floor.

[Illustration]

You can peel it up from one edge and let the air under easily enough,
and then a baby could lift it.

When the insect wants to move, it peels its foot loose.

It can do this very quickly.

Mollie wants to know what all these little sharp spines on the back of
the tibia are for.

Let us look at them.

There is a double row of them.

Do they not look a little like a comb?

I suspect that is what they are, the grasshopper's comb.

Insects are very neat little folks.

They are always cleaning their wings and their legs and their antennæ
and their bodies.

The spines on their legs are very convenient for that.

Charlie says he thinks the grasshopper's legs are as good as a whole box
of tools.

So they are, and you have not yet heard all they can do.

The funniest is to come.

Mr. Grasshopper sings his song with his hind legs!

He rubs the inside of his femurs against the outside of his wings.

There is a row of very fine spines down the inside of the femur for the
use of the little fiddler.

He scrapes away with these on his wing covers.

Yes, Ned, his femur is his violin bow, and his wing cover is his violin.

The noise he makes does not sound much like a violin, little Nell
thinks.

No, indeed, it does not.

It is the shrilling sound we hear in the grass in the summer time.

[Illustration]

It is only the male grasshopper that sings.

The little lady grasshopper sits still and listens to him.

Now, let us look at the other legs.

The front pair are the smallest.

Can you find the little coxa and trochanter?

Yes, Charlie, we will draw the little front leg.

Let us number the segments as we did those of the hind leg.

See, the femur is larger than the other segments, but it is small as
compared to the femur of the hind leg.

The tibia is shorter, too, than the tibia of the hind leg.

The little tarsus is like the tarsus of the hind leg with its claws and
its pulvillus, only, of course, it is smaller.

The middle pair of legs is like the front pair, only larger.

Now, see how the legs are placed on the grasshopper's body.

[Illustration]

The front pair are directed forward. When the insect walks, they pull.

The middle and hind legs are directed backward. When the insect walks,
they push.

Well, little legs, you all have your own work to do, and you surely do
it very well.

Let me see, who has front legs as odd as the grasshopper's hind legs.

Yes, Mollie, the mantis has.

Let us look again at the mantis.

Here is another picture of it.

Its hind legs are just common walking legs, you see.

And so are its middle legs.

[Illustration]

John says they are directed forward instead of backward.

You can see why.

They have to take the place of the front legs, that do not touch the
ground at all.

They have to hold Mr. Mantis up, and pull him along when he wants to
walk.

Now, let us see if we can make anything out of these front legs.

The coxa is small and close to the body.

The trochanter, II, is very large and long.

Yes, Charlie, it increases the size and strength of the leg very
greatly, by being thus enlarged.

The femur, III, is large and strong, too, and it has a row of sharp,
spiny teeth down the inside.

The tibia, IV, is also well supplied with cruel teeth, and at the end of
it is the tarsus, as you see.

You know how the mantis uses these legs. The joint between the tibia and
femur is a strong hinge joint. If can shut the tibia close to the femur,
the spiny teeth of the one locking into the spiny teeth of the other,
and forming a terrible trap for the insects that are so unfortunate as
to get caught in its merciless grip.

Altogether, you see, it is quite a terrible leg, though it has no more
segments than a common leg.

The segments are changed in shape and size from the regular leg
segments.

When any part is changed from the regular shape or size, we say it is
_modified_.

The front legs of the mantis are modified to catch and hold its prey.

Yes, John, the hind legs of the grasshopper are modified too.

They are modified to jump with.

Ned says he didn't know there was so much to learn about a little thing
like an insect's leg.

Yes, indeed, there is a great deal to learn about all living things.

I wonder how you would like to look at the grasshopper's wings for a
little while.

Here is one with large wings.

[Illustration]

See how they lie along each side of the body.

They come together on top like the ridge of a sloping house roof.

Yes, May, they are the roof to the grasshopper's body, and they help to
protect it.

Let us gently spread them out.

Ah! these roof wings are not what the locust flies with at all.

See, folded up under them is a pair of delicate gauzy wings.

[Illustration]

If we are careful, we can spread them out.

We will use this dead grasshopper that Charlie has found.

What pretty wings! So dainty! And how cleverly they are folded up, like
little fans.

Who would imagine such delicate gauzy wings were folded away under the
hard, stiff roof wings.

The roof wings are called wing covers, because they cover up these
pretty inner wings.

The locust does not fly with the wing covers.

It spreads them out wide to get them out of the way.

It flies with the inner wings.

[Illustration]

How pretty the flying wings are when they are spread out!

See, over there goes a grasshopper whose flying wings are bright yellow.

And there goes another with red flying wings.

Some of the grasshoppers are almost as pretty as butterflies when they
are flying.

They show their gay inner wings only during flight.

As soon as the grasshopper comes to rest the inner wings close of
themselves.

The wing joints act like springs.

The grasshopper does not have to think about shutting up its wings.

[Illustration]

John says it has a spring in its wing covers too.

Open the wing cover.

There, it locks itself, as it were, and stays open without any effort on
the part of the grasshopper.

You see the grasshopper wants its wing covers to stay open and out of
the way of the inner wings when it flies.

So it just opens them, and there they are.

It moves the inner wings very fast indeed when it is flying. It would
not do at all for them to be fastened open.

If it did not move them, it could not fly. The wings fairly _whirr_,
they go so fast. They beat against the air, and thus the grasshopper is
pushed along through the air.

As soon as it is done flying it stops moving the wings, and they
instantly close of themselves.

[Illustration]

Then it unlocks the wing covers and they shut down over the inner wings.
They shut down very tightly. They overlap, as you can see, just below
where they are fastened to the insect's body. Thus they form a very good
roof.

[Illustration]

What wonderful wings the grasshopper has!

And there is something more to be said about them.

Some species of locusts use their wings as musical instruments. When
they wish to, they rub the upper end of the inner wings against the
upper end of the wing covers when they are flying.

This makes the crackling sound we sometimes hear when the locusts fly.

What is that, Mollie? You have caught a locust that has no wings at all?

Who can guess why?

Ah, yes, our wise John says he thinks it is because it is a young one.

What makes you think so, John?

I know, you remembered the larva of the dragon fly and of the May fly.

[Illustration]

Those larvæ had no wings at first, but the wings grew, and finally at
the last moult they were full-sized.

When first hatched, the locust larva is like the full-grown locust,
only, of course, it is very small, and it has no wings at all.

It is a little dot of a thing with an enormous head.

Here are three clinging to a blade of grass.

Are they not funny little rascals!

The baby locust eats and grows and moults until, finally, the wings
begin to show as little pads at its sides.

[Illustration]

It is easy to find these half-grown grasshoppers in the middle of the
summer.

Here is one that little Nell has caught.

See its wing pads.

Mollie says they are rudimentary wings.

It continues to eat and grow and moult, and the little wings are moulted
off with the rest of the skin--for the wings of the insect are only
modified parts of the skin.

But there are new and larger wings underneath, and these grow and are
moulted off with the next skin, until, at last, the grasshopper is
full-grown, with full-grown wings.

It will not moult any more after that.

When full-grown, the females lay their eggs.

Where do you suppose they lay their eggs?

Some of them make a hole in the ground.

The end of the abdomen is very strong and sharp, and the locust can make
a hole with it quite easily.

When the hole is made, then the eggs are laid in it, and the locust
covers the opening to the hole with a sticky substance to keep out the
wet.

The eggs usually lie in the ground all winter.

[Illustration]

Just think of the locust eggs there are under our feet as we cross the
fields!

Millions and millions of little eggs are hidden in the ground.

Early in the next summer the little eggs hatch, and then tiny locusts
creep up out of the earth and go hopping about everywhere.

Most of the full-grown locusts die in the fall.

As you know, the young ones have no wings, and this is why there are so
few winged locusts early in the summer.

Some locusts make their holes in fence rails or in old stumps.

It is the locusts, or shorthorned grasshoppers, that sometimes come in
swarms that darken the sun.

There is nothing the Western farmer dreads so much as a swarm of
locusts.

I have heard how the grasshoppers came in Kansas one year.

They appeared all of a sudden in countless millions.

They were piled up against the fences clear to the top.

They swarmed into the houses, and in places on the railroad track they
were piled so deep the trains could not run through them.

Think of a railway train being stopped by grasshoppers!

They stripped every leaf from the trees and left them as bare as in
winter.

They ate up every blade of grass.

But in the East they do not do so much damage, though they sometimes
cause the farmers serious loss. When summer comes we may listen to their
cheery din with pleasure.

I am sure we shall enjoy the merry sounds of the grasshoppers all the
more now that we know something about how they are made, and something
about the little fellow that makes them.

[Illustration]




THE LONGHORNED GRASSHOPPERS

[Illustration]


Probably it was the longhorned grasshoppers that Charlie saw so many of
in the meadow.

Look, next time, Charlie, and see if the swarms that start up before you
have not long, slender antennæ.

See, here is one.

Its antennæ are like threads, and they are longer than its body.

If you were to look at its tarsus, you would find it had four joints
instead of three.

Otherwise, the longhorned, or meadow grasshoppers are very much like the
locusts, or shorthorned grasshoppers.

John says he thinks the meadow grasshoppers are more slender and
delicate in shape.

That is true, as a rule, though there are some species of the locusts
that are as slender as the longhorned grasshoppers.

But there is one thing about these longhorned fellows that will amuse
you.

Some of them have ears on their front legs!

It is not uncommon for insects to have hearing organs on their front
legs.

You know what an ear is. It is something to hear with. The hearing part
of our own ears is way inside, out of sight.

The outer part of the ear, that we can take hold of, is only a sort of
funnel to gather up the sound, and we could still hear if this part of
our ears were cut off.

Way back inside the ear is a little curtain, or eardrum, made of a thin
membrane.

When sounds enter the ear they cause the eardrum to tremble or vibrate,
and this excites the nerve of hearing that is behind the eardrum.

Now some grasshoppers have a little flat membrane on the tibia of each
front leg. It is an eardrum. Behind it is the nerve of hearing. When
sounds strike the eardrum it vibrates and excites the nerve of hearing.

[Illustration]

So you see the insects have _ears_, though they have no funnel-like
outsides to them.

So, after all, there isn't so _very_ much difference between the way the
grasshoppers hear, and the way we hear, although they do hear with their
legs.

Yes, Ned, it is about the same thing when they hear with sensitive spots
on their antennæ.

The sounds strike the sensitive spots, which are tiny eardrums, and
cause the nerves that come to them to hear.

You see, after all, an ear is only a membrane able to vibrate when
sounds strike it and a nerve sensitive to those sounds.

It does not matter much where the ear is located. Our ears are on either
side of our head, and so are the ears of all the higher animals.

But the ears of the insects are more useful to them when on the antennæ,
or the legs, or some have them on the abdomen. An ear is an ear wherever
it happens to be, and the insects hear well enough with theirs.

[Illustration]

In many species of the longhorned grasshoppers, the male has a curious
musical instrument on his wing covers, close to where they grow from the
body.

Little Mr. Grasshopper sings to his lady-love by rubbing the upper parts
of the wing covers together. You see the round places at _X_,--those are
the modified parts of the wing cover, by means of which he can make his
music.

What is that, May? Your grasshopper has a long sword at the end of its
body?

[Illustration]

Yes, that is its ovipositor. Ovipositor means "egg-placer."

With this long, sharp ovipositor the grasshopper can roughen the bark of
twigs or make holes in the stems of plants or in the earth.

Then the eggs are guided down through the long ovipositor to the place
prepared for them, and fastened there by a gummy substance.

[Illustration]

Only the female grasshoppers have the long, sword-shaped ovipositor.

The ovipositor of the locust is not long and sword-like.

It is short, but it is strong and sharp, and you remember how the locust
uses it to dig with.

Yes, indeed, Mollie, there are a great many species of locusts and
grasshoppers, and some of them are very beautiful.

In hot countries they sometimes grow to an enormous size.

May is asking why they make molasses.

No, Ned, of course it isn't molasses. Children call it molasses because
it looks like it.

Now, May, where does it make its molasses?

In its mouth, you say, and then it spits it out on your finger.

What? You don't like its old molasses on your finger?

No, of course not.

It smells bad, and it is sticky and disagreeable to the touch, and if
you happen to put your finger in your mouth it has a nasty taste.

[Illustration]

John says he hates to touch the grasshopper on account of this molasses.

You _all_ do?

Well, I guess that is why it makes its molasses; it doesn't want you to
touch it.

It doesn't want birds to eat it, or other insects to bother it, and so
it smears them with this ill-smelling, sticky liquid.

Some birds eat it, however, in spite of its molasses.

Turkeys do.

What is that, Ned? turkeys are not birds, you think?

What are they?

If you think about it, you will have to come to the conclusion that
turkeys are birds.

Then chickens and ducks and geese must be birds?

Well, so they are. They are all birds.

But to return to turkeys.

A flock of turkeys will spread out in a long line, and go across a
field, driving the grasshoppers ahead of them, and eating them as fast
as they can pick them up.

It is a funny sight to see a big flock of turkeys hunting grasshoppers
in a meadow.

It is not funny to the grasshoppers, though.

What is that, Charlie? The grasshopper somehow reminds you of the
praying mantis?

Do you know it is a near relative of the mantis?

Now, I will tell you something funny about the mantis.

It makes "molasses" like the grasshopper. Yes, it is this harmless
"molasses" that has given it the name of "mule-killer."

I will tell you something else. If you lie down in the grass and watch
the grasshoppers, you will have a good time, and you will see some
strange things.

Nobody can tell you very much about the grasshoppers--or about the
living creature. The best way is to use your own eyes and watch.

Just lie down in the grass perfectly still, and soon the insects that
live in the grass will begin to appear.

[Illustration]

What they will do you must find out for yourselves; but you may be sure
it will be worth finding out,--the funny, clever, wise little
people!--ah! they are good to watch.

They will soon go on chirping and shrilling and rasping and kricking and
tapping and whizzing and whirring and buzzing all about you; and if you
listen sharp, perhaps you can understand some of the things they say.

And this I am sure of; if you really watch and listen, you can learn to
know the different insects by their sounds, just as you can know the
birds by their songs. You can even tell whether you are listening to the
meadow grasshopper, or the locust.

If I thought you were not tired of hearing how grasshoppers are made, I
should tell you some more.

John says he would like to know some more.

Well, then, I will tell you about their rings.

You can see the rings of the grasshopper people very plainly in their
abdomens.

[Illustration]

Here is a picture of a grasshopper. It is not all drawn. The legs and
wings are not shown, and the abdomen is drawn by itself so you can see
it easily.

There are ten rings, you see.

The rings are covered with a hard, horny substance.

This horny substance is what makes the body of the insect so stiff. It
would be soft but for the chitin, as the horny substance is called.

It is better for the insect to have a chitinous covering.

If you had no bones, you would be glad to have your skin hardened with
chitin.

You see how it is, you wear your skeleton inside. Your skeleton is of
bones; it is an inside skeleton.

The grasshoppers and all the insects wear their skeleton outside. It is
made of chitin; it is an outside skeleton.

Insects have no bones.

They do not need any. They are kept stiff by the chitin.

Each ring in the insect's abdomen is made of four pieces, the back
piece, the side pieces, and the under piece. You can see the back piece
and one side piece in the picture, but you cannot see the other side
piece nor the under piece without turning the insect over.

The rings are made in pieces so the insect can move.

Suppose each ring were made of one stiff piece like a finger ring. What
a poor stiff, old grasshopper it would be! The rings are called
segments.

Segment number one has only a back piece, you see.

All the other segments have four pieces.

Segments two, three, four, five, six, seven, and eight are alike.

Segments nine and ten are modified to form the ovipositor.

The segments are fastened together by skin. The skin is soft so the
segments can move back and forth.

The segments can be crowded close together to shorten the abdomen.

The segments can be separated from each other to lengthen the abdomen.

There is no chitin in the skin between the segments. It is soft so the
segments can move.

Do you know how a telescope is made?

The abdomen of the insect can lengthen and shorten somewhat like a
telescope.

It is easy to see the rings in the abdomen of the locust or grasshopper.

Now, what about the thorax?

That, you tell me, has no rings.

[Illustration]

Look again, and look carefully.

You will have to see another picture.

This is a picture of the head and thorax of the grasshopper. It is drawn
to show the separate parts of the thorax.

Yes, John, the thorax has three segments. They are grown so close
together you would not suspect it until you looked very close.

The front legs are fastened to the first segment.

What is fastened to the middle segment?

Yes, May, the middle pair of legs and the wing covers.

Mollie says the long hind legs and the flying wings are fastened to the
third or hind segment.

Oh, you funny little folks! you are all made up of rings.

Yes, indeed, little Nell, the segments of the thorax are made of chitin;
they are very stiff.

Ned thinks the segments of the legs are made of chitin too.

Their outside shell certainly is.

The whole outer shell of the insect is made of the horny chitin.

You hard little chitin-covered, segmented people, you are very different
from us.

Ah! yes, May, they are like us in many ways.

Indeed, Mollie, insects do have brains.

They have muscles, too, to move their little bodies with.

We have muscles under our skin, you know. The muscles move our arms and
legs and bodies.

If you clasp your fingers around your arm and then move your arm, you
can feel the muscles.

The insects have muscles inside their chitinous shells. The muscles move
their bodies.

The muscles are very, very strong.

They are stronger for their size than the muscles of a horse.

John, do you know how heavy a load a horse can pull?

Well, it cannot pull a load equal to the weight of its own body.

Now, listen to this,--almost any insect can pull a load that is five
times the weight of its body!

Ah, yes, some insects can pull a much heavier weight than that. The
honey bee, for instance, can pull a load twenty times as heavy as its
body.

And think how our little insect friends can jump! Why, a kangaroo cannot
begin to jump like a grasshopper.

No, indeed, Ned, the finest jumper in the world of men cannot begin to
jump as well as a grasshopper, not even with the aid of a spring board.
He is a mere baby in comparison.

Ah, yes, we can do a great many things better than the grasshoppers,
but, you see, they can do some things better than we can.

What is that, John?

You want to know about the mouth parts of the grasshopper?

Suppose we leave the mouth parts.

They are difficult to understand. We have had a good many new names to
learn lately.

What, May? You can't remember such hard words?

Oh, yes, of course you can.

You don't mind learning "rhinoceros," and "Mississippi," and
"Popocatepetl," and "eenie, meenie, monie mike," and they are quite as
hard as femur and tibia; and, besides, you have a femur yourself! Did
you know it?

Your thigh bone, like the grasshopper's thigh, is called a femur.

Yes, Mollie, there is a bone in your leg called the tibia, and you have
a tarsus in your foot.

So, after all, when you are learning hard words about insects you are
learning a great deal besides, as you will find.

[Illustration]




PRETTY KATYDIDS

[Illustration]


Katy did!

Katy didn't!

Katy did!

Well, well, did she or didn't she, and what of it anyway.

Come here, Katy did and Katy didn't, the children want to see you.

She's a pretty little Did and Didn't, isn't she.

Katy, why do you not know your own mind and always tell the same story?

Krick--krick--krick, there, she is talking; that's her way of saying
"Katy did."

Krick--krick--krickkrick. Now she has said "Katy didn't."

Well, we never shall know anything more about it.

No, little Nell, she doesn't really say Katy did or Katy didn't, but it
sounds like that, and we make believe she says it.

John says he is sure the katydids are first cousins to the grasshoppers
and locusts, and so they are.

They are very closely related to--which division of locusts, do you
think?

Oh, yes, the longhorned, of course.

See their long, long antennæ, and the male has the same little musical
places on his wings, little membranes that vibrate and make his song of
Katy did and Katy didn't.

[Illustration]

No, the little lady katydid cannot sing--only the little male, and he
keeps it up all night long.

We sometimes wish he would get tired or sleepy and stop, but he never
does.

Why do you suppose he likes to sing so well in the night?

The katydids generally live on trees and bushes.

Yes, they are a beautiful, pale green people, and that is one reason we
do not often see them. It is not easy to find a katydid among the green
leaves.

The female katydids have a long sword-shaped ovipositor with which they
roughen the bark on twigs, and place the eggs there, fastening them with
a gummy substance.

The egg is glued fast so it will not fall off.

It hatches into a little dot of a katydid that has no wings, but, like
the larvæ of the other insects we know about, it eats and grows and
moults, and at last its wings and the rest of its body are full grown.

It casts its skin for the last time; it is no longer a larva, but a
full-grown insect.

Yes, May, we call the young of all insects larvæ.

[Illustration]

See this dainty katydid that Charlie has caught for us.

How pretty it is!

Its feelers are like long green threads.

And how sensitive they are!

It quickly starts away when we touch one of the feelers.

Yes, Mollie, the katydid walks more than the grasshopper.

It can jump well with those long, slender hind legs. How beautiful its
hind legs are! They are longer and more delicate than those of the
grasshopper.

And its wings, how gauzy and dainty! Its wing covers are not so stiff as
those of the grasshopper. They look almost like flying wings, they are
so delicate.

See, they open, and fasten themselves open, like the wing covers of the
grasshopper; and when they are at rest they overlap like the wings of
the grasshopper.

The inner wings are like fine lace.

They look too delicate for use, and yet the katydid flies very well
indeed with them.

They are a little longer than the wing covers.

[Illustration]

When the katydid is at rest you can see the tips of the wings extending
beyond the ends of the wing covers.

The part of the inner wing that extends beyond the wing covers is green,
like the wing covers, you see.

But the rest of the inner wing is not green, it is like very thin glass,
or like fine isinglass.

Look for a moment at the long curved ovipositor of the female katydid.

If you look sharp, you will see teeth on it like a little saw. It is
with these teeth the little katydid is able to rasp the surface of the
twigs, and make a place to fasten her eggs to.

Her wings are wrapped about her form like an ample cloak of green.

[Illustration]

Now, my little katydid, you may fly away if you want to.

We are very much obliged to you for letting us look at you, and we hope
we have not troubled you too much.

See her go!

How prettily the katydids fly.

They seem almost like little birds.

I am sure they love to fly about in the bright summer-time.

Happy katydids.




THE CRICKET-LIKE GRASSHOPPERS

[Illustration]


Now what strange-looking little creature are you?

John says it looks like a grasshopper, only it has no wings and its body
is not that of a grasshopper.

May says it looks like a cricket, only it has the long legs of a
grasshopper.

It is called the cricket-like grasshopper, and it is partly like a
cricket, as you see, and partly like a grasshopper.

It is a funny little fellow that lives around in dark corners, usually
in the woods.

Do see those long, spiny legs!

[Illustration]

How he _can_ jump.

He has strong, short, sharp spines on the femurs and on the tibias.

He has spines on all his legs, and what long feet he has!

Yes, Nell, his antennæ are longer than anything else about him. I
should think they would be in his way.

He has no wings at all, and he never will have any.

He has two pairs of feelers in front of his mouth that show very
plainly. They show more plainly than the mouth parts of the grasshopper,
though they are quite like them.

Yes, Ned, they are larger than the mouth parts of the grasshopper.

There is another little fellow very similar to the cricket-like
grasshopper.

It has no wings, and the top of the thorax is like a broad shield.

It is called the shield-backed grasshopper.

See if you can find one of them.

[Illustration]




THE CHEERY CRICKET PEOPLE

[Illustration]


Chirp! chirp!

Chirp! chirp!

Ah, listen to that cheery song. It is the cricket on the hearth singing
thus gayly.

Dear little cricket; he lives in the corner by the fireplace. When all
is still we hear his cheery chirp! chirp! chirp!

Sometimes he comes peering out and runs across the hearth, a little
black fireside fairy.

Do you know one of the prettiest stories in the world has been written
about a cricket?

Charles Dickens wrote it, and it is called "The Cricket on the Hearth."

Be sure to read this beautiful story. If you do not own it, ask to have
it for Christmas. It is in the book of "Christmas Tales," a book that
everybody ought to have.

Grasshoppers and katydids are pleasant people, but they live out of
doors, and they do not seem quite so much like our very own little
friends as the crickets.

Of course the crickets live out of doors, too, only once in a while one
of them comes into the house to live with us.

We hear them chirping in the grass and among the stones.

[Illustration]

There is a certain place near the seashore where the rocks are alive
with the black cricket folk.

They come peeping out at you from all sides. They skip over the rocks,
and you will often see a pair of long feelers and an inquisitive little
head looking around a corner.

You too, know there are crickets, little Nell?

Let us go and see them.

Ah, yes, there is one, looking at us out of inquisitive eyes, over there
by that big stone.

[Illustration]

Of course they are cousins to the grasshoppers. I knew you would guess
that right away.

Yes, John, the little cricket people have flat backs.

Their wing covers do not make a peaked roof over their backs, but are
flat on top and bent down at the sides like a box cover.

[Illustration]

They are not so long as the wings of the grasshopper, but they overlap
on top.

Sometimes they are not so long as the body of the cricket.

Just watch now!

How spry the cricket folk are!

They jump well, but they also run well. They are always running about as
though they enjoyed it.

It is not easy to catch one of them unless we, too, are "as spry as a
cricket."

Funny little rascals, to come peeping at us like that, from out the
crevices in the stones.

When we stir,--pop! they are back out of sight.

They eat leaves, and they enjoy a piece of nice, ripe fruit, or a bit of
juicy vegetable.

See here, one has jumped on my hand and is sitting quite still.

It is a male cricket.

[Illustration]

How do I know that?

May says because it has no ovipositor.

Yes, that is one way to know.

Look at his wing covers.

[Illustration: MALE CRICKET]

See how they are ribbed.

[Illustration: FEMALE CRICKET]

Now look at this cricket Mabel has caught. It is a female, and its
wings, you see, are not ornamented like those of the male.

[Illustration]

Do you know the meaning of his heavily ribbed wing covers?

Why, his wing covers are his musical instruments. See one of them
magnified.

It is divided into spaces like so many little drum-heads. The ridge that
runs across the top of the wing is something like a file in structure.

When little Mr. Cricket is in the mood for chirping, he raises his wing
covers and rubs them together.

This throws the stiff membranes of which the wing covers are made into
vibration, and the result is the cheery call of our little black fairy.

Little Nell says the cricket is more like a brownie than a fairy, and
maybe she is right.

You can easily see the crickets rub their wings together if you watch in
the fall of the year.

John says, Why do you have to watch in the fall of the year?

Now who can guess?

Yes, May, it is because the crickets are then full-grown, and have
large wing covers. At first, in the early summer, they have no wings,
and so of course, we could not see them chirp.

The whole grasshopper tribe is a vocal one; the males all have musical
instruments, and in Japan, the people are so fond of the song of _their_
grasshopper folk, which are not quite like ours, that they make tiny
cages for them.

The chirpers are caught and put in these cages, and sold in the city
streets.

Yes, little Nell, the crickets make molasses. So do the katydids.

All these little hopping neighbors of ours seem to understand the useful
art of molasses making.

The mole crickets are different from the others.

[Illustration]

They burrow in the ground like a mole, and we do not often see them.

The strangest thing about them is their hands.

No, of course they are not really hands, but they look like them.

All the joints of the fore legs are modified to form strong digging
tools, and they look very much like the paws of the mole.

[Illustration]

They are troublesome fellows, sometimes, when they eat the tender roots
of the vegetables in the garden.

You all have seen the little tree cricket, but you might not recognize
it as a cricket, it is such a pale little creature.

Its light green body may often be seen on bushes in the summer-time,
and, if you look carefully, the form will tell you what the little one
is.

[Illustration]




A LARGE FAMILY

[Illustration]


The crickets, grasshoppers, walking sticks, praying mantes, and
cockroaches, strange as it may seem, are all near relatives to each
other.

They all belong to one large family or order, the ORTHOPTERA.

Or-thop-te-ra, is it not a hard word!

It will not seem so hard when you know what it means.

It comes from two Greek words _orthos_, meaning straight, and _pteron_,
meaning a wing.

Straight-wing.

And do you know, it does not mean that the _upper_ wings are straight,
but that the under wings are folded down in long straight lines.

Now let us see if we can tell in what ways all of our Orthoptera are
alike.

They all have--?

"Four wings"--that is right, little Nell.

What, John? the walking sticks have no wings?

[Illustration]

Not our walking sticks, but yet they belong to a winged family. You
remember the tropical walking sticks that have queer leaf-like wings, do
you not?

Are the four wings alike?

No, John says, the upper ones are narrow and stiff and serve as wing
covers.

The inner ones are broader and more delicate. They fold up when not in
use and are used to fly with.

Very good indeed, John. Now I will tell you something. The Orthoptera
all have mouth parts made to bite with. They do not bite anything but
what they eat, however. They are quite harmless so far as we are
concerned.

The young Orthoptera look like the old ones, only they have no wings.
They hatch out of the egg with a head, a six-legged thorax, and an
abdomen.

Now, come, let us look at all of our orthopterous friends again,
cockroaches first.

[Illustration]

How do they get about, John?

Yes, indeed, they run, the rascals. They run fast too. They are flat and
their six legs are very much alike. They are well built for running and
hiding in cracks.

Suppose we call them the _Running Orthoptera_.

Now, look at our mantis.

He does not run very much. How is he different from the others?

Ah, yes, he has big front legs, and little Nell says he grabs things
with them.

[Illustration]

So he does. Now, what shall we call these grabbers?

The Grabbing Orthoptera, Ned says.

Suppose we say instead the _Grasping Orthoptera_, because grasping
sounds a little better than grabbing. Do you not think so?

[Illustration]

Now for Mr. Walking Stick.

We cannot very well call him a member of the Running Orthoptera, can we?

Ah, Mollie has it. We must call his kind the _Walking Orthoptera_.

His six legs are all long and slender, and he moves them slowly.

[Illustration]

Now for those fellows with the long hind legs, the locusts and katydids
and crickets. Yes, all of you are ready to name them.

We call them--what?

May says, the Hopping Orthoptera.

John thinks Jumping Orthoptera would sound better.

And that is what we name them, the _Jumping Orthoptera_.

How many kinds of Jumping Orthoptera are we acquainted with, Ned? Now,
think before you speak.

He says we know the shorthorned grasshoppers, or locusts, the
longhorned, or meadow, grasshoppers, and the crickets.

Very well done, Ned.

May wants to know what has become of the katydids and the cricket-like
grasshoppers--she thinks Ned has left them out.

Ned says they belong to the longhorned grasshoppers.

Now you shall have a list of the Orthoptera that will help you to
remember them.

If we can group together things that are like each other, it is easier
to remember them.

       ORDER ORTHOPTERA.

      _Running Orthoptera._
          Cockroaches, Croton Bugs.
      _Grasping Orthoptera._
          Praying Mantis.
      _Walking Orthoptera._
          Walking Sticks.
      _Jumping Orthoptera._
          Shorthorned Grasshoppers, or Locusts.
          Longhorned, or Meadow, Grasshoppers.
          Crickets.

There are a great many species of Orthoptera in the world, and we have
seen but a very few of them.

But I can tell you, we feel a little better acquainted with you
orthopterous fellows than we did.

The dragon fly says we have not given him a place.

But, dear dragon fly, you belong to another family. You are not an
orthopterous insect.

Your order is called the ODO-NA-TA.

The wings of the Odonata are very different from those of the
Orthoptera.

[Illustration]

You remember how they are?

Yes, Ned, they are stiff and covered with a close network of fine veins,
and all four of them are alike.

No wing covers, you see.

I do not know why they have the name Odonata.

The young Odonata are not like their parents, excepting that they have a
head, a thorax with six legs, and an abdomen. But they certainly do not
look like their parents!

No, John, the May flies do not belong to the Odonata. Their wings are
quite different.

[Illustration]

Do you not remember how small the hind wings are?

The name of their order is EPH-E-MER-I-DA.

There is a big name for a little insect!

It comes from the Greek word _ephemeros_, and you know what it means.

What? Has everybody forgotten about the dainty little ephemeræ, that
live but a day?

That is what _ephemeros_ means, lasting but a day.

The stone flies have four wings, but they are not like those of the
Odonata, or of the Ephemerida.

Do you remember how the hind wings are folded?

Yes, May, in plaits, so these are the plaited wings, or
PLE-COP-TE-RA, from _pteran_, a wing, and _plecos_, plaited.

The little silver fish, as you remember, has no wings at all,
so its order is called THY-SA-NU-RA, from its bristle tail,
_thysanos_, in Greek, meaning a tassel, and _oura_, the tail.




HEMIPTERA




THE GREAT BUG FAMILY

[Illustration]


Now, my children, do you know what a bug is? Most people do not.

They call every insect a "bug," but bugs are bugs, flies are flies, ants
are ants, and neither flies nor ants are bugs.

Indeed, no insects are bugs--excepting just bugs!

Our croton bugs are not really bugs. They do not belong to the bug
family.

[Illustration]

A bug has four wings--when it has any.

But its wings are not like those of the Orthoptera or Odonata or
Ephemerida or Plecoptera.

Some bugs have no wings.

Young bugs are like old bugs, only smaller, and they have no wings.

You remember the Orthoptera and Odonata bite their food.

They chew it up and swallow it.

Bugs do not bite, they suck. Their mouth parts are often grown together
in the form of a tube that is sometimes very sharp.

They stick these sharp tubes or beaks into their food, and suck it up.




THE WATER BOATMAN


What, May; you want to see a bug? Well, that is easy enough.

Here is one in this pond at our feet. Do you know it?

[Illustration]

Yes, John; it is the water boatman.

Nell says she doesn't see it.

There, Nell, that little thing that shines like silver under the water.
It is clinging to a weed.

No, we cannot see it very well unless we catch it.

Ned, do you think you can be spry enough to scoop it out with the net?

There, he has it,--no, it is off.

Well, we shall never see that one again; but here, in this corner of the
pond, see, several of them.

[Illustration]

Now don't be in too great a hurry, Ned; they are hard to catch.

He has it!

Here, don't touch it,--bugs are biters, remember.

Put it in this tumbler of water, and clap the cover over
it--quick--so!--now we have it.

What is that, Mollie? I just said bugs do not bite, and now I call them
biters?

I don't wonder you are puzzled.

They do _not_ bite, but they pierce with their mouth tubes, and that
feels just as though they bit us. So we commonly speak of bugs as
biting.

If you wish to be very exact, we will hereafter speak of bugs as
piercing or sucking.

Now, Mr. Water Boatman, we are going to have a good look at you.

Nell says it is not like silver any more, but just a little black and
gray speckled bug.

That is because it is now on top of the water. When it goes under it is
surrounded with a layer of air, and that is what makes it look as though
it had on a silver dress.

May wants to know how it manages to take a layer of air down under the
water. If you were to look at it with a magnifying glass, May, you would
see it is covered with fine hairs; the air becomes entangled in these
hairs. Do you not remember how the leaf of the jewel weed, or
touch-me-not, as it is also called, shines when you plunge it in water?
It, too, is covered with fine hairs that hold air. Many leaves shine in
this way when put under water, and always because of the fine hairs
that prevent the air from being pushed out by the water. You see the
hairs on the bugs serve the same purpose as those on the leaves; they
hold fast the air.

Our water boatman breathes this air that surrounds him.

You know how insects breathe do you not?

Dear me, then I shall have to tell you.

They have no lungs; of course, so they cannot breathe with lungs as we
do.

Take a long breath--see how your chest rises--that is because you filled
your lungs full of air.

Well, the insects have to breathe air.

Every living thing has to breathe air. Nothing in the world could live
without air.

Even plants breathe the air, you know.

Now, there is a little row of holes or pores along each side of the
abdomen of the insect.

These are the breathing pores. No, May, the insects do not breathe
through their mouths, they breathe through their sides.

[Illustration]

You can see the breathing pores, or spiracles, as they are called, very
plainly in many insects.

You can see them on the abdomen of the locust, and in some caterpillars
they are bright-colored spots.

There are spiracles on the sides of the thorax, too, but they do not
show so plainly as those on the abdomen.

The spiracles open into air tubes that carry air to the blood of the
insect.

[Illustration: _Spiracles_]

If you watch a grasshopper or a bee, you can plainly see it breathe. The
abdomen moves in the bee as though it were panting. These movements of
the abdomen cause the air to go in and out. All insects move their
abdomens to send the air in and out, but it does not show plainly in all
of them, for, though insects need air, some of them can get along with
very little.

Yes, John, insects have blood. It is not just like our blood, but still
it is blood.

It is not generally red in color, though sometimes it is reddish, and
sometimes it is brown, or violet, or even bright green.

Yes, that seems strange to you, but you remember how ears are ears, and
serve to hear with, no matter where on the body of the creature they are
located. So blood is blood, and serves the purpose of blood, no matter
what its color. The blood of some insects has a very bad odor, and in
the case of certain beetles, when they are disturbed, this foul-smelling
liquid oozes out of the joints of the legs.

Yes, Mabel, it is probably used, like the "molasses" of other little
friends we know, to repel enemies.

But to return to breathing. Some larvæ breathe by gills, and do not have
spiracles until they are grown up, but all grown-up insects breathe by
spiracles.

Yes, John, the larvæ of the dragon flies and May flies breathe with
gills.

I thought you would remember that.

The water boatman breathes by spiracles, and carries his supply of air
with him. All grown-up bugs breathe by spiracles.

Now look down into the pond. I think you will see some water boatmen
anchored near the bottom.

Yes, May, they cling by their front feet. Their hind pair of legs are
rather odd-looking; they have a fringe of hairs on the inside.

John says their hind legs are modified to swim with.

Very good, John.

The hind legs are the oars that row these little boats about in the
water.

But why are the little boats that have come to anchor down there moving
their paddles so constantly?

Ah, yes; it is because they want fresh air to breathe.

You know there is always air in pond water, and they keep their paddles
moving, so as to change the envelope of air that surrounds them.

[Illustration]

They know what to do to take care of themselves, if they _are_ nothing
but little bugs.

When winter comes, they go down to the bottom of the pond and bury
themselves in the mud. They lie there without moving or breathing until
spring, when out they come, as lively as ever.

Yes, certain other animals pass the winter in this way; the bears, for
instance, find a snug den and sleep all through the coldest winter
weather. We call this winter sleep of animals hibernation, and many of
the insects hibernate.

Yes, Ned, hibernating animals can get on with very little air; they
sometimes seem to need none at all, and they take no food.

May wants to know what these queer water boatmen eat.

They suck out the juices of other insects.

They must lay their eggs in the water, little Nell thinks.

And so they do, on water plants.

Near the city of Mexico there are species that lay enormous quantities
of eggs in the ponds, and what do you think? The Indians mix these eggs
with meal, make them into cakes, and eat them.

The Mexican bugs are gathered by the ton, too, and sent to England as
food for cage birds, fish, and poultry.

Little Nell thinks there must be a great many bugs in a ton. Indeed,
there are, probably about twenty-five millions of them; so you can
imagine Mexico is well supplied with water boatmen!

When the young ones hatch out they look like their parents, only, of
course, they are tiny little dots of things that have no wings.

But they eat and grow and moult like other larvæ until they are
full-grown insects.

What have you discovered, Ned? You look surprised.

The water boatman has no antennæ!

It doesn't seem to have any. But look carefully and I think you will
find some tiny ones tucked away under its head.

Nell wants to know if the water boatman has a thorax and an abdomen.

Indeed, it has, but you will have to look carefully to see them. Its
abdomen is short and thick and hard. The water boatman is much more
compact in form than the Orthoptera, or any of the other insects we have
studied.

You are right, John, an insect with a long abdomen, like the
grasshopper, could not get on very well in the water.

Now, May, take the cover off the tumbler. There!

Our water boatman was not slow to make use of his wings.

Well, good-by and good luck to you, little water boatman.

[Illustration]




THE FUNNY BACK-SWIMMERS


What, John? You know a water boatman that swims on its back?

That makes Nell laugh, and no wonder.

Yes, there is a little bug that swims on its back.

[Illustration]

It is very much like the water boatman, and it has long paddles made of
its queer hind legs.

Unlike the water boatman, however, its back is not flat but is shaped
like the keel of a boat.

This being the case, it just turns over and swims with its keel-shaped
back in the water.

It is sometimes called the back-swimmer, and most boys are well
acquainted with it.

What do you think about catching it in your fingers, Ned?

Ah, you do not like to!

It has a very sharp beak for sucking the life out of other insects, and
if you succeed in getting hold of it, it will stick that into your
finger.

And my! how it does sting!

It is not an easy matter to catch it, however,--it is such a quick
little rascal.




THE GIANT WATER BUG

[Illustration]


A good many kinds of bugs live in the water, but perhaps the oddest of
all is the giant water bug.

It _is_ a giant!

Have you ever seen very large, flat brown bugs lying on the ground under
the electric street lamps?

Those are the giant water bugs.

They fly in the night from pond to pond, and are attracted by bright
lights.

They fly into the electric lights, and are killed in great numbers
sometimes.

This is such a common habit with them that in some places they are
called electric light bugs.

A good many people never saw these bugs until they were found dead
under the electric lights, and so they imagined they did not exist until
electric lights were invented.

But that is a very foolish notion; the bugs were here thousands of years
before electric lights were dreamed of.

The giant water bugs are not pleasant to handle when alive.

If you ever succeed in catching one in the water, which is not easy,
they slip about so quickly, be sure and not take it in your fingers.

The California children call a species they have there "toe-biters," and
they say they bite their toes when they go in wading.

The giant water bugs are the largest of living bugs, and they even kill
and eat fish.

Their fore legs can shut up like a jackknife. The tibia shuts into a
groove in the femur, and thus the bug is able to seize and hold its
prey.

It clasps its victim in its arms, as it were, and calmly proceeds to
suck out its blood.

In some species of the giant water bugs the female does not leave her
eggs in the pond to take care of themselves; she puts them on the back
of her mate, who is obliged to carry all of his progeny about with him
until they relieve him by hatching out and swimming off to see life for
themselves.




LITTLE MRS. SHORE BUG

[Illustration]


May says she wants to hear more about bugs. Well, there is little Mrs.
Shore Bug. I think you must all know her.

She is the little bug that flies along in front of you on the seashore,
or, indeed, on the edge of any body of water.

She flits along just in front of you, and is so quick in her motions
that you will hardly ever catch her.

She does not fly far--she alights just far enough ahead to make you try
again to capture her, but when you think you have her, she isn't there!

[Illustration]

She has sped off on one of her short flights, and so she will continue
to do as long as you continue to chase her.




THE AIRY WATER STRIDERS


Then there are the water striders.

They are bugs, and it is easy to guess how they got their name.

You surely remember the longlegged, dark colored fellows that straddle
about on top of the water, in ponds or in still pools in streams?

Who has not tried to catch them!

And how very seldom any one succeeds!

May knows where we can see some water striders close at hand.

They are on the pond in the meadow. Let us go.

Ah, you little ones! There you are, scampering over the water on your
airy, fairy feet, as though you were on dry land.

[Illustration]

How they flash about! And what cunning dimples their little feet make on
the water when they stand still!

If we keep very quiet, they will stop darting about in that wild way,
and we can see them better.

Now, water striders, why do you behave so, and what do you eat?

Eat? Why, insects, of course. And as to behavior, they may well wonder
more at ours than we at theirs.

They skate about on the surface of the water all summer, and when winter
comes they hide away at the bottom of the pond, right under the water,
or along the edges of the banks.

When the warm spring sunshine wakes up the sleeping plants, then the
little water striders wake up too.

Out they come, to resume their endless skating and insect catching, but
now they lay their eggs, gluing them fast to water weeds.

The young water striders look like their parents, and they, too, like to
go circling and flashing over the top of the water, with their long legs
spread out.




A QUEER FELLOW


What do you suppose is in this box?

Little Nell may open it.

There, out he comes--slowly, as though he were looking around and
thinking about it.

[Illustration]

May says, "Hello, Mr. Walking Stick, you here again?"

Ho! ho! _is_ it Mr. Walking Stick?

You look again.

Mollie thinks, if she were going to name it, she would call it Mr.
Walking Threads.

Yes, it is more slender than even the walking stick.

What is that, John? You thought insects had six legs, and this has only
four?

Now, here is something for us to think about.

Ned says it has six long threads that might be legs, but it does not
walk on the two front ones.

It seems to use them as antennæ.

[Illustration]

Ned says those front ones look to him to be jointed just like the
others, and he thinks they are legs.

Mollie says they have no little feet like the others, and she thinks
they are antennæ.

Well, well, what are we to do? Think of its having feelers that look
like legs or legs that look like feelers, so that you cannot tell which
they are!

Now it is beginning to move, and--Oh, ho, that long part in front is not
its head!

[Illustration]

See, it separates into two--what?

Surely, two front legs.

See, they were folded up, somewhat like the front legs of the mantis,
only these could fold close together, being threadlike.

So the long threads are antennæ after all.

Now it has raised its head, which we easily see is quite round, with
tiny eyes, and the antennæ are growing out from the front of it.

What is it? A walking stick? A mantis?

[Illustration]

Why! why! There it goes, sailing off in the air with a queer little
fluttering motion of its whole body.

It has wings!

John has caught it and brought it back.

Now let us see those wings, you strange little creature.

You will have to look close, but there they are, narrow, short, such
tiny wings! How _do_ you suppose it flies with them?

You seem queerer and queerer the more we look at you, little
what-shall-we-call-you.

But we know you are not a walking stick because our walking sticks have
no wings.

The truth is you are a--bug!

Yes, this little threadlike creature belongs to the same order as the
big flat giant water bug.

It grasps its victim, in its fore feet like the mantis, but instead of
biting its prey it sucks out the juices.

You would hardly expect such a delicate creature to catch and kill other
insects, yet such is the case.

No, I do not think it will pierce your finger with its beak. I have
often handled them, and have never been stung by one. We often see them
walking about in the grass and along paths.




THE WELL DRESSED LACE BUG

[Illustration: HAWTHORN TWIG.]


IF we pay a visit to that hawthorn bush we shall probably find
a bug to our liking. Yes, here is one.

It is a tiny thing, I know, but wait until you see it under the
microscope.

Ah, I thought you would be pleased!

Nell says it looks as though it had on a lace party dress.

Is it not a dainty fairy!

We call it the lace bug.

It does not suck the juices of other insects, but instead it sucks the
juices of plants.

Its eggs are very curious. It lays them on leaves and glues them fast.
They look like little out-growths of the leaf.

The young lace bugs are like their parents in form, only, of course,
they have no wings and so they are not pretty.

[Illustration]

Fairy lace bug, we are glad to make your acquaintance.




A BAD BUG

[Illustration]


Now, here is a bug we all loathe. It is round and flat, and reddish
brown in color, and it has a disgusting odor.

But though we hate this bug, it is very fond of us. It has a short,
sharp tube folded down under its head, and this tube it likes to raise
up and stick into the skin of people, and suck out their blood.

It has no wings, only a pair of little scales where its wings should be.
Yes, May, these scales are rudimentary wings, and they are good for
nothing. It once had wings, but it preferred to go slipping about in
cracks and hiding in beds, until in course of time no wings grew, which
served it right.

It has antennæ and eyes and spiracles; indeed, it has everything a bug
should have but wings and good manners.

We call it the bed bug because its favorite home is in beds, so that it
can sally forth at night and feast upon its sleeping victims.

It lays its eggs in cracks and crevices, and each egg is like a little
jar with a rim and a lid at the top. When the young one hatches it
pushes off the lid. The young are in shape like their parents, only they
are very light colored, and almost transparent. They look like ghosts of
bugs, but they are very voracious ghosts indeed, and they eat and moult
and grow and become darker colored until they reach maturity.

One strange thing about them is that they can live a very long time with
nothing to eat, so that houses long vacated may still contain these
nuisances, that sally forth, eager to round out their emaciated forms at
the expense of the new occupants of the house.

The barn swallow is sadly afflicted by a species of these unwelcome
visitors to its nest, and the poor bats are also victimized by a species
of bed bug.

The bad odor comes from a liquid poured out of the back of young bugs,
and from the under side of old ones.

These insects are very undesirable acquaintances, and they breed so fast
that even one, brought into a house, may cause it to become generally
infested in a few weeks.

Eternal vigilance and great cleanliness are the housekeeper's only
safeguards.

There are some species of bugs that closely resemble the bed bugs, only
they have wings, and live on flowers or in the cracks of the bark of
trees.




THE TROUBLESOME RED BUG

[Illustration]


There are a great many kinds of bugs on the leaves and flowers in
summer, and some of them do much damage by eating the vegetation.

One of the most troublesome of these is the red bug. Here is a picture
of one.

Its wings look as if they had an X drawn on them.

Let us spread out one of the wings.

Why do you all laugh?

Sure enough, Ned, how _can_ we spread out the wings of a bug in a
picture?

[Illustration]

But there is a way out of that difficulty.

Yes, another picture.

Only the upper wings are spread out.

You see, the half of the wing next the body is stiff like a wing cover,
and the other half is thin and silky, and folds up under the stiff part.
When the insect flies it spreads out the under wings, too, for there is
a pair of thin, flying wings folded on the body under these upper wings.

These upper wings, that are half wing cover and half flying wing, are
characteristic of the bug order.

Not all the bugs have them, but a great many have.

The name of the bug order is HEM-IP-TERA, meaning half-wing.
You see why.

Yes, John, the word "hemiptera" comes from two Greek words, _hemi_,
meaning half, and, as you know, _pteron_, meaning a wing.

The young red bugs are like the old ones, excepting in color.

What do we call the young of insects, little Nell?

Yes, we call them larvæ. These red bug larvæ are bright red with black
legs.

They pierce the cotton plants in the South, and suck out the juices.

Of course, they grow and moult until they arrive at the adult form.

What, John? You do not know what "adult" means? Adult means "grown-up."

It is a short way of saying grown-up; and after this, when we mean a
grown-up insect, let us say an adult insect.

To return to the red bug. When it reaches the adult state, it is not
such a bright red, but rather of a reddish color with brownish wings
striped with light yellow.

Beside eating the juices of the cotton plants and thus injuring or even
killing them, the red bugs stain the white cotton and spoil it.

They are also troublesome in some parts of Florida, where they pierce
the skins of the oranges, and cause the fruit to decay.

[Illustration]




THE RAVENOUS CHINCH BUGS


There are a great many bugs injurious to vegetation, among them the
little chinch bugs.

They are so small, each one no larger than a plant louse, that you would
not think they could do much harm.

One of them could not, but when they appear in millions, then they are
terrible.

Here is one magnified to show the white wing covers with black markings.

[Illustration]

Would you believe that this tiny insect has destroyed millions of
dollars' worth of grain in the United States?

What, Charlie? you should think they could be killed out? That is a very
difficult task. You see they are so small, and they breed so fast. There
are two broods of them in one year, and when they have eaten one grain
field they start off, millions strong, to another.

Of course a great many methods have been tried for getting rid of them,
and one very curious method you will like to hear about.

You know insects are subject to diseases.

What, Nell, you never heard of a sick bug?

Yet it seems they are sick sometimes, and certain diseases kill them.
Chinch bugs are not as healthy in some places as in others.

There is a contagious disease that kills them off in very great numbers.

Ned says he can guess what remedy the people apply to the healthy chinch
bugs that are eating their grain.

Yes, they introduce diseased chinch bugs into the grain fields with the
healthy ones. The contagion spreads and the bugs die!

There is another way of getting rid of some kinds of troublesome
insects. That is, to introduce an insect not injurious to vegetation,
that will prey upon the injurious ones.




THE WELL PROTECTED STINK BUG


One of the bugs we know the best and like the least is the stink bug.

It deserves its name.

John says he had one on his hand this morning.

How did you like it, John?

Did any of you ever pick berries where these bugs were?

See what a face Mollie is making! It is very evident that _she_ has.

[Illustration: RED RASPBERRY.]

What a nasty taste they give the delicious fruit.

Even the flavor of the red raspberry is spoiled if one of these bugs
pollutes it.

What makes them smell so? May is asking.

The disgusting odor is caused by a liquid that is ejected out of little
pores on the under side of the thorax.

The bug can eject this liquid when it pleases.

Most members of the bug order can eject a disagreeable liquid, though
few of them do it so successfully as the stink bug.

If the stink bug is not disturbed, it does not give forth the bad odor;
but when we jostle the bushes in getting the berries, that startles it,
and we get the benefit of its alarm.

Yes, undoubtedly the bugs make a bad odor for the same reason the
grasshoppers make molasses. They wish to repel their enemies.

Very few birds ever touch a stink bug.

Nell thinks a bird would be crazy to eat a stink bug.

Mollie says if it were not crazy when it began, it surely would be
before it got through!

Not only the bugs make these disagreeable odors.

Many other insects do.

The cockroaches, as we know, and one reason we dislike them so is
because of this offensive odor.

Some species of crickets, too, and indeed many, many insects give forth
odors from glands that exist just for that purpose.

No, indeed, these odors are not all alike. Some have a strangling
quality like ammonia, and sometimes the odors are not disagreeable. Some
insects have sweet odors, like perfumes.

[Illustration]

The pleasant odors are not used to repel, but to attract.

If an insect wishes to see its mate, it may be able to give forth a
pleasant odor that will reach a long way through the air, and the mate,
smelling it, will follow it to its source. You see, this pleasant odor
is one way of talking; at least it is one way of sending a message.

Insects can detect odors much better than we can.

No doubt many insects produce odors that affect other insects, but that
are so faint we cannot smell them at all.

The sense of smell, even in the human being, is very wonderful. It is
the keenest of all the senses.

You have studied weights and measures, and you know how small a quantity
a grain of anything is. Well, you will be astonished to know that your
nose can detect the presence of 1/2,760,000,000 of a grain of mercaptan,
a substance having a very bad smell.

[Illustration]

So you see, insects that can smell very, very much better than we would
be greatly influenced by the odors of other insects.

Some of the stink bugs, although so disagreeable if disturbed, are very
useful to us, as they eat other insects injurious to vegetation.

Most of them, however, eat fruits and vegetables, and some species do a
vast amount of mischief.




THE LOUSE


Yes, John, lice are bugs, and very mean bugs too.

They have lived at the expense of other creatures so long that they
cannot exist unless they have a living body to feed on.

Here is a picture of one very much enlarged. No wings, no beauty, a pale
white thing, all claws and mouth.

[Illustration]

It has a long sucking tube by which it pierces the skin, and a sucking
stomach by which it pumps the blood into its mouth.

Such creatures are called parasites.

Yes, bed bugs are parasites too.

Besides the lice that live on human beings, there are species that
infest animals.




BIRD LICE AND BOOK LICE


Bird lice are not lice!

That is, they do not belong to the bug order.

They belong to a small order by themselves, but they are parasites like
the lice.

The little white book lice that scurry away when we open an old book
that has been standing on the back shelf, are not lice, either; they
also belong to a little order of their own, and are constructed very
differently from the true lice.




FRIEND CICADA


WHIR-R-R-R-RRRRR!!

May says she wishes that locust would keep quiet. It makes her warmer
than ever to hear him carrying on so this hot day.

John says it is the weather that is warm, not the song of the locust.

And yet, locusts generally sing during the hottest part of the summer,
so that we have learned to associate them with warm weather.

Since we must listen to its shrill out-cry, I wish we could also see
it.

Ah, that is a wish soon gratified! Here comes one out of John's pocket.

[Illustration]

John says it is _not_ a locust.

Ah, yes, the shorthorned grasshoppers are the real locusts, and this
fellow has somehow got the name.

But it is not a locust.

It is also called the dog-day harvest fly, but it is not a fly, though
it looks considerably like one.

Really, you know, it is a--bug!

Yes, it belongs to the bug order.

Its true name is cicada, and its shrill midsummer song has been famous
from the beginning of time.

[Illustration]

It looks like an enormous fly, but its mouth parts are the mouth parts
of the bug, and in other respects it resembles the members of the bug
order, when it is examined closely.

What glassy wings!

Let us spread them out carefully. Four of them it has.

The cicada, you see, has no wing covers. Nor are its upper wings, half
wing cover, and half wing, like those of so many of the bugs.

No, all four of its wings are alike, and all four are flying wings.

When it is at rest, the inner wings slip out of sight under the outer
ones, which fold down like a roof over its body.

See how beautifully the wings, are veined.

You think cicada has a very broad back, Nell?

So it has, and a broad head.

[Illustration]

See its black eyes on the corners of its head!

How many facets have its eyes?

I wish I knew, but I do not. This, however, I can tell you. If you look
on the top of its head between its compound eyes, with a magnifying
glass, you will find it has three little eyes there.

These small eyes are simple, and are called _ocelli_.

Many insects have ocelli, indeed, some of the grasshoppers have these
extra eyes on top of their head.

May says the grasshoppers are very astonishing insects.

You think you know all about them, and you are all the time finding out
something new. You would not be apt to notice these little ocelli on the
grasshopper's head, they are so small, and besides, some of the
grasshoppers do not have them.

Yes, Mollie, it is the same with the crickets and katydids. Some species
have ocelli, and some have not.

If you look full in the face of a cicada, you can see the three little
round ocelli between the compound eyes.

[Illustration]

They show very plainly with a magnifying glass.

Indeed, it is difficult to explain what the ocelli are for.

Some think they are to see objects close at hand, while the compound
eyes see more distant objects.

Others think the ocelli are only capable of distinguishing light from
darkness.

Yet others think they are merely a "survival" of the eyes of the worms.
You know, way back in time, before there were winged insects there were
worms. In some way the insects are descended from the worms, and though
they have got rid of many of their wormlike parts they still retain some
of them, and probably among these are the ocelli.

When an animal of any kind keeps organs that belonged to its ancestors,
but that are of no use to it, we say these organs are "survivals." They
have not yet had time wholly to disappear.

Yes, John, the time may come when the ocelli will disappear from the
insects. A good many insects have lost them already.

Indeed, you are right, May; they have lost them because they did not use
them. When an animal ceases to use an organ in course of time, for lack
of exercise, that organ dwindles away and disappears. It generally takes
a very long time for this to happen.

Yes, Mabel, thousands or even millions of years may pass before an organ
that has gone out of use entirely disappears. As generations succeed
each other each generation loses a little power in that organ until,
finally, there is no organ left.

John is puzzled to know just what is meant by an organ. It is some
particular part of the creature. An arm is an organ, a stomach is an
organ, an eye is an organ. The whole creature is made up of organs, and
is called an _organism_.

Your whole body, John, is an organism, but your legs and arms are
organs. Now, I think you understand.

Our cicada has one organ that is very interesting; it is the little
apparatus by which it sings.

Turn it over, Ned, and all of you look at the two thin plates lying
against the abdomen just below the thorax.

Those membranes are like two little kettle drums, and they are its song
organs.

There are other membranes beneath them, and large muscles within the
body to move the membranes.

The membranes being set in rapid vibration we get the shrill cry of the
locust.

Only the male has the kettle drums. In the female these organs are
rudimentary, and she is dumb.

[Illustration]

Cicada, you are a pretty little thing with your clear, glasslike wings
and your black body with red and green trimming. See its mouth lying in
that little groove under its head. It is a tube, and sharp. The cicada
sticks it into a leaf or young twig to suck out the juice.

Nell wants to know if the young cicadas are like the old ones. Indeed,
they would be cunning little things if they were, and--yes, they _would_
look very much like flies.

But the young cicadas are queer babies, indeed. They do not look very
much like their parents, although they have a head, a thorax, and an
abdomen.

[Illustration]

The female cicada makes a slit in the bark of the tree twig with her
ovipositor and lays the eggs there. As soon as they hatch out, the tiny
cicadas drop down to the ground and burrow into the earth.

You would not know that they are cicadas, they are such queer-looking
little things. But they have strong, sucking mouth parts with which they
pierce holes in the roots of trees and suck out the juices.

Of course these larvæ grow and moult and continue to do so until they
have moulted a good many times and grown quite large.

They stay down under the ground two years.

At the end of that time they crawl up to the surface of the earth in the
early summer.

They climb trees, or weeds, or fence posts, and then the skin splits
down the back for the last time, and out comes a full-grown cicada with
bright glassy wings.

The wings of the larva do not grow at each moult like the wings of the
grasshopper.

The larva never gets beyond short little wing pads. See John's eyes
twinkling! I believe--yes, he has! He has brought us the cast-off skin
of a cicada to look at.

[Illustration]

Why, John, you are like a good fairy to us to-day, giving us just the
things we want just when we want them.

Now, see this little shell. See the front legs, like strong paws to dig
with. And see its little glassy eyes, and its little wing pads!

It is a perfect cast of the cicada larva.

Yes, May, this little cast is made of chitin, and it will last a long
time. Chitin is a very indestructible substance; even fire will not
destroy it, but in course of time the moisture and the acids in the
earth destroy it, so that at last the millions of cicada shells and
grasshopper cast-off skins, which are also of chitin, and cricket
moults, and all the other little cast-aside chitinous overcoats of the
insects, return again to the earth and the air whence they came. The
minerals and gases that compose them let go of each other, as it were,
and the chitin is no longer chitin.

Amy says she has seen these little cicada shells hundreds of times but
did not know what they were.

Yes, we are sure to find them almost every summer.

If we look, we will also find other larvæ shells. Down in the grass are
the cast-off coats of the grasshoppers and the crickets.

All we need do is to look, and we shall be sure to find them--like
unsubstantial ghosts of the active little wearers.

No doubt you all have heard of the seventeen-year locusts. They, too,
are cicadas, and they look very much like this one, only it takes the
young ones seventeen years to complete their growth.

Think of living in the ground and sucking the juices out of the earth
and of tree roots for seventeen years!

[Illustration]

How would you like to do it?

But no doubt the cicada is quite happy living in this way.

At the end of seventeen years the cicadas come up out of the earth in
great swarms.

They cast their skins for the last time. The queer little shells are
seen everywhere, and the air resounds with the songs of the freed
prisoners.

In the South it takes only thirteen years for these cicadas to develop.

[Illustration]

I once went up the side of a beautiful mountain in North Carolina, where
was such a mighty host of cicadas in the trees that I could not hear my
companion speak, and a little way off the noise sounded like a torrent
of rushing water.




THE ODD SPITTLE INSECT


Why, little Nell! What is the matter?

You do wish the frogs would stop spitting on the grass?

Let me see; why, poor child, she is all covered with frog spittle.

That is kind, Ned. See, he is wiping her apron off with some fresh,
clean leaves. Let us rest awhile under this shady tree.

John, pick that grass blade with the frog spittle on it. Be careful not
to disturb it.

[Illustration]

There is a surprise in store for you; this white frothy substance that
is so abundant in some places in the summer and that looks like spittle
is--guess what?

Frog spittle, May says. So you think the frogs spit on the grass do you?
They must be tall frogs to reach up so high.

With this little twig let us carefully brush away the white froth.

Now see.

Yes, there is something in the centre of it.

It is the larva of a--bug!

[Illustration]

The female bug, and here is one of the little things, lays the egg on
the leaf or twigs, and when it hatches the young bug sucks out the sap
of the plant which finally appears as this white froth.

The larva remains surrounded by the froth until its transformations are
complete.

Just before the last moult it stops sucking out sap. The froth dries
about it in the form of a little room, and in this it undergoes its last
moult and comes out--an adult bug.

The froth is supposed to be used as a protection, and it may be against
some enemies, but there are certain wasps that delight in invading the
frothy masses and hauling out the unwilling morsels within to feed to
their young.

No, little Nell, the frogs have nothing whatever to do with this frothy
substance which was called frog spittle before people understood about
the little insect that made it.

They really thought the frogs did it.

The adult spittle insect is called a frog hopper, and it has the power
of leaping very well.

[Illustration]




PRETTY LEAF HOPPERS


Just see this bush! Be careful not to shake it.

It is covered with such pretty, bright-colored little insects.

[Illustration]

There, May ran against the bush and see--they are hopping wildly off in
every direction.

Yes, little Nell, they do sound like rain drops pattering on the leaves.

They are prettier than the spittle insects and more slender, but they
hop about in very much the same way.

The larvæ do not make froth, however.

These are the leaf hoppers.

What big heads they have!

And how daintily their green forms are pencilled with red lines.

There are a great many species of the leaf hoppers, and not all of them
are as pretty as these.

[Illustration]

Some of them are very small indeed, and some do great damage to the
grain crops and the fruits.

They suck out the juices of the plants.

If you sweep the insect net over bushes or through the grass in
midsummer, you will be pretty sure to draw in a good collection of leaf
hoppers.

Most of us are only too well acquainted with the rose-leaf hopper that
swarms on rose bushes and kills the leaves. If we have not noticed the
insect itself, we have not failed to notice the little white skins that
it has cast off and left clinging to the leaves.

Yes, these are the little skins it discards when it moults.

John says we can kill them by washing the bushes with strong soap suds.

[Illustration]

Ned says it is better yet to spray them.

It is better and also easier to spray them than to wash them.

You know there are machines for spraying trees and other plants. They
consist of a tank to hold the liquid that is to be sprayed and a pump to
force it through a rubber pipe with a sprinkler at the end.

Very often a mixture of soap and kerosene oil, known as "kerosene
emulsion," is used to spray with.

Paris green and blue vitriol, both very poisonous, are often used on
grape vines before the grapes are formed, and very gaudy vines they are
for a little while after this bright poison has been sprayed upon them.

Although insects are so very interesting, we have to protect ourselves
against many species in order to live.

Yes, John, it is oftentimes merely a question which shall profit by the
crops we plant, the insects or ourselves.

Sometimes the insects win, sometimes we win, but it is a closely
contested warfare all the time.

We plough the land and take care of it, we plant the seeds and keep out
the weeds. Then, when we have a fine crop growing, along come certain
destructive insects, feeling very happy, no doubt, to have found such a
feast.

Now the fight begins. They attack the crop, we attack them. We spray
them with poisons, burn up their eggs, do everything we know how to get
rid of them.

Wise men have spent many years of close study finding out the habits of
the insects destructive to grains and fruits, in order to be able to
destroy them.

Although many of the plant hoppers are such nuisances to us, there is
one family of hoppers that is seldom a nuisance.




THE COMICAL TREE HOPPERS


Do you know the tree hoppers,--absurd little jokers that they are?

Oh, yes, they are hard and three cornered, like animated beechnuts, as
somebody has said.

Yes, some of them have humps on their backs and some have horns.

[Illustration]

John says he once made a collection of tree hoppers and put them in a
box with a reading glass over the top, and showed them to his friends to
make them laugh.

May says she saw them, and they reminded her of Brownies.

Would it not be fun to have a tree hopper Brownie book!

The tree hoppers jump about on the bushes and eat the juices of the
plants, but there are not usually enough of them to do damage. They
seldom come in swarms like some of the leaf hoppers, though sometimes
they do.




THE JUMPING PLANT LICE


The jumping plant lice are nearly related to the tree hoppers, but they
do not look at all like them.

Under the magnifying glass they look like tiny cicadas.

See, here is a picture of one enlarged.

[Illustration]

Their natural size is no larger than a plant louse.

Have you not often seen them clustered close together on the young twigs
of pear trees--tiny, light-colored things that jumped in all directions
when you touched the twig?

The name of the plant louse that infests pear trees is the pear-tree
psylla. It is very destructive to pear trees, sucking out the juices of
the young shoots.

The pear trees can be saved by spraying them with kerosene emulsion as
soon as the young leaves have opened in the spring.




THE APHIDS


Now, let us go in search of the aphids, or aphides, as they are also
called. We shall not have to search far.

[Illustration]

In a very dry season we generally need not search at all. All we need do
is to examine the nearest weed to find plenty of aphides.

Yes, they are the little plant lice that seem at times to cover every
growing thing.

Sometimes they are green, sometimes brown, or gray, or reddish, in
color.

They are tiny creatures, but what they lack in size they more than make
up in numbers.

Go now, and find some aphides.

Ah, here you all come, each bearing a leaf or a twig on which are
aphids.

There was no trouble in finding them!

They do not hop like the jumping plant lice when they are disturbed.
They remain where they are unless they are very much shaken up.

See, most of them are without wings, though here are a few with
beautiful transparent wings.

Antennæ they have, long and threadlike. And see, the knowing little
eyes!

They seem to be anchored to the leaf.

Hold the leaf up to the light, and see if you can discover what they are
doing.

Ah, see those mouth tubes firmly stuck into the leaf. There they stand
all day long and suck out the juice.

[Illustration]

Ned says he should think they would burst.

But they do not; they grow. And they also get rid of a large part of the
superfluous sap in a curious way.

They use what they need to grow on, and the rest escapes from the
insect's body in the form of "honey dew." It is a sweet liquid of which
ants and bees are very fond.

What, John, you have heard that the aphids give out honey dew from two
little horns near the tip of the abdomen?

Let us see if we can find these horns. Yes, we can see them plainly, and
_very_ plainly with a magnifying glass.

But now listen; the honey dew does not come from the horns. On the end
of some of the horns, or tubes, we can see a drop of clear liquid.

For a long time people believed this was honey dew, but instead, it is a
waxy substance which is not sweet.

It has been very carefully studied by wise men who tell us it contains
no sugar and is probably used as a means of defence, as aphides have
been seen to smear the faces of insect enemies with this wax.

There are a great many species of aphides, and not all of them have the
little tubes or horns on their backs. But probably many that have no
horns give forth honey dew.

It is really a waste substance from the body of the aphid.

Ants are so fond of the honey dew that certain species of aphides have
been called the _ants' cows_, because the ants take care of them for the
sake of the honey dew.

Some ants protect the aphids from their enemies. They drive off those
insects that would devour the aphids, and when winter comes these ants
carry the aphids down into their warm nests under ground, and keep them
safe through the cold weather.

The aphides cannot stand wet weather, but after a long spell of dry
weather they will be found in great abundance.

[Illustration]

Sometimes they eat so fast and so much that the honey dew falls like a
shower from the trees upon which they are. It covers the ground beneath
and the leaves of plants, and makes everything very sticky and
disagreeable to the touch. The dust settles on it, too and a growth
something like mould often turns it black--as we find to our discomfort.

But when the honey dew is fresh the bees love it. They collect large
quantities of it and make it into honey. Squirrels like it to.

It is great fun to watch the nimble squirrel folk sitting in the trees
and holding a leaf between their little hands while they lick off the
honey dew.

Children sometimes suck the honey dew from the leaves in back country
places, where sugar is scarce and where candy is seldom to be had.

Which side of the leaf does the aphid prefer?

Yes, it is on the under side always.

I wonder why.

John says the aphides would be better protected in case of a shower.

Ned says the skin is tenderer on the under side and easier to pierce.

Mollie thinks they want to be in the shade out of the hot sunshine.

I should not wonder if all of these reasons were right.

My little aphid, how many wings have you when you have any?

Yes, little Nell, they have four of the daintiest, prettiest little
wings you ever saw.

[Illustration]

True enough, most of them have no wings at all.

[Illustration]

John thinks those must be young ones.

Sometimes they are, but not always. Many of the adult aphids have no
wings.

The aphids are very curious insects, and when you are older I hope you
will remember to study them carefully.

No, John, not all species of aphides make honey dew.

Some form instead a white, powdery substance that is seen scattered over
the body.

May says that must be the kind she has.

Let us see. Yes, May's aphids produce the white powder instead of honey
dew.

That is _their_ way of getting rid of the waste matter.

May says she is glad to know that; she thought her aphids had something
the matter with them. They seemed to be falling to pieces.

No, May, they are not falling to pieces; that powder can all be rubbed
off, and there are your aphids whole and sound beneath it.

Do you know that some species of your funny little tree hoppers secrete
honey dew also, and even have ants to attend them? See if you can find
some of these this summer.

Sometimes aphids live on the roots of plants as well as on the leaves.

Yes, indeed, May, they are very destructive insects. We have to spray
our house plants to get rid of them, and often our garden flowers as
well, and they do a great deal of damage to fruits and vegetables, and
one of them, the phylloxera, has nearly destroyed the vineyards of
France. It lives on the leaves of some species of grapes and on the
roots of others. We have to be very careful about getting grape vines
from Europe to plant in this country on account of the phylloxera.

[Illustration]

What have you found now, John? Ah, yes, an alder branch, with a white,
cottony substance on it. You have been poking into it with a little
stick, and you think there are insects beneath it.

What, May, you always thought that white stuff was a plant growth, like
mould?

We can easily find out. Get out some of the little things inside if you
can, John. It is not easy to separate them from their cottony covering
without crushing them, but now we can see quite well with the magnifying
glass--and yes--you see they are little insects.

We call them the woolly aphids.

They also secrete honey dew.

You say the ground below the alder bush was all sticky and black, John?

That was the honey dew, blackened by a little plant something like
mould, that grows on it.

We often see woolly plant lice in the summer-time on different plants,
and one species injures apple trees. It gets on the roots as well as on
the tender bark of young trees and kills them.

Yes, indeed, Mollie, the aphids are bugs. They belong to the bug order,
which is a very large and important insect family, and contains some
members that are exceedingly troublesome to us.




SCALE BUGS


What, May, you are tired out?

What have you been doing?

Oh, yes, washing the scales off the leaves of your mother's window fern.

[Illustration]

It must indeed have been a task; what did you wash them off with? Why
did you use soap suds?

Because your mother told you to; well, that is a good reason, but why do
you think she told you to use soap suds?

You say you don't know, but you think very likely these scales are some
sort of bug, as everything nowadays seems to be bugs.

Well, I don't know about everything being bugs, but those scales
certainly are. They are scale bugs.

Did you stop to look at them under the magnifying glass?

[Illustration]

No, but you brought a piece of the fern for us to look at.

It will be necessary to put it under the microscope.

There, now look.

Yes, that scale looks like a tiny mussel shell; but look carefully, and
you will see it has legs.

Lift it up with the point of a pin, and under it you will find a mass of
eggs. Yes, Ned; it is like a quantity of eggs under a dish cover.

The cover is the female scale bug, and she has laid all those eggs.

Yes, the scales we see on so many plants are the scale bugs.

They are not all alike in shape, or size, or color; here is a different
kind, you see.

[Illustration]

But they are all very prolific; that is to say, they produce a great
many young, and do it in a short time.

Yes, John, the tiny, dark-colored scales that look like little oyster
shells on the skins of oranges are a form of scale bug, and a very
troublesome one, too, to the orange grower.

But though most of these insects are troublesome, the family is redeemed
by a few members that are of great value to us.

One of these is the scale bug that supplies shellac, and all that comes
from it to our markets. These curious bugs give forth a resinous
substance that envelops the eggs and glues them to the twigs whose
juices the bug sucks out. It is this resinous substance that is
collected by breaking off the twigs where the insects are. It is used
for varnishes, as you know, and for polishing wood and other substances.

There are other scale bugs that secrete wax, and some of them produce it
so abundantly, and of such good quality, that it has become an article
of commerce. China wax, which is wax of a very fine quality, is secreted
by a Chinese scale bug, and the wax is used for making fine candles, as
well as for other purposes.

In Mexico we have the cochineal insect, which is a scale bug that lives
on a cactus that grows in Mexico.

Like many others of the scale bugs, the cochineal males have wings and
are not so scalelike as their helpless mates.

But they are of no use to us. It is only the female cochineal we use.

She is raised in great numbers in cactus gardens planted on purpose.

Here is the picture of a cactus with cochineal insects upon it.

[Illustration]

These insects contain a very brilliant, red coloring matter that is used
by us in dyeing leather and wool, and in making paints. The insects are
gathered and dried, and thus sent to market.

Although a few of them are useful to us, the scale bugs, on the whole,
are a serious pest; and they are found on nearly all kinds of plants all
over the world.

You should think all the plants would soon be gone, so many insects eat
them?

Well, they would, only other things eat the insects.

Insects have a great many enemies, after all.

Sometimes the weather is bad for them, the season is too hot or too
cold, too wet or too dry, and then they do not appear in large numbers.

Sometimes one kind of insect eats another kind.

Sometimes tiny plants, like moulds, grow on the insects and kill them;
and birds destroy a very large number.

If the farmers only knew how much good the birds do them, they would
never allow one to be killed. Even the crows that pull up their corn are
worth many times the corn they eat in the insects they destroy. There is
scarcely a bird but what is of value to the farmer.

The hawks that catch his chickens catch more mice and moles in his
fields, than chickens in his barn-yard.

And as for the robins, the blue jays, and all the small birds, they do
more to save the growing plants, than all the soap suds and kerosene
emulsion that were ever made.

No one should ever shoot a bird. The birds are our natural protectors
against the vast armies of insects, that, but for the birds, would soon
destroy us by eating up our food plants.

What is that, May? You belong to an Audubon Society for the protection
of the birds?

Yes, I know you do, and so do John and Ned and Mollie and little Nell.

I wish every child in the United States belonged to the Audubon Society.
Then our birds would be safe. They would never be killed as they are now
for foolish women to wear on their hats.

When the Audubon Society children grew up they would not wear dead
birds, of course, and their children would be taught better, so that
after a while the Audubon Society people would be the only ones left,
and so the birds would be safe.

Let us get as many people to belong to the Audubon Society as we can.

What is that, Amy? You have learned more interesting things about birds
in the Audubon Society than you ever knew in your life before?

Yes, I am sure you have, and what could be lovelier to study about than
the birds.

What is that you are saying, Ned? You love to go bird hunting? Ah, I see
your eyes twinkle, sir; I know how you go hunting. You hunt with your
mother's opera glass! That is the proper way to hunt birds.

We can learn more from watching one bird with a glass than we could from
shooting a hundred.

But you do shoot them, John? Yes, I know about that, too. I know what
kind of a shooting instrument you got for Christmas, sir, and I have
seen the birds you shot!

Yes, nearly all of us have seen them, and how well he does it!

What, Amy, you think John ought to be ashamed of himself to go about
shooting birds, and we ought to be ashamed of ourselves to talk so about
it?

There, now, don't be vexed with Amy, children. She has known us but a
little while, and she has not seen John's birds, so I do not wonder she
feels indignant.

What is that, May? You have one of John's birds right here in your
school-bag? Show it to Amy.

Isn't it pretty! It is a very charming photograph of a catbird on its
nest.

You see John shoots birds with a camera! His father gave him a beautiful
one for Christmas, and he has made good use of it.

How long did it take you to get that bird, John?

Just hear! He spent more than a week getting acquainted with the bird so
it would sit still on the nest while he took its picture.

I am sure that was a week well spent.

John says he feels better acquainted with the catbird than he would have
been if he had read fifty books about it.

And I am sure he is right. The only way to enjoy a bird and to know it,
is to watch it alive.

A camera is the very best gun in the world for catching birds. And it is
really much better fun to take their pictures than to shoot and kill
them.

It seems to me we have strayed a long way from bugs.

May says she thinks birds are much more interesting than bugs.

That may be, but still we want to know about bugs, too.

Do you think you will know a bug when you see it now?

No, I do not believe you can be sure of that. But at least you know
something about a few bugs.

Some day you will study more carefully how insects are formed, and then
you will understand better how we decide what order they belong to.

We group together the insects that are most like each other.

[Illustration]




 ~NEUROPTERA~

 ~TRICHOPTERA~




THE HORNED CORYDALUS


No more bugs, if you please.

We are to make the acquaintance of another order of insect folk this
time.

[Illustration]

I think we can find some worthy members of this new order if we go with
John to a brook he knows of.

Here we are, and it certainly is a lovely brook, whether we find a
dobson in it or not.

Yes, Nell, the dobson is the new insect we shall try to find.

Now, be careful and not get your clothes too wet, but we have to turn
over the stones along the edge of the brook until we find what we are
after.

Mollie wants to know how she is to know it if she finds it.

Well, Mollie, whatever you find that is interesting you must show us.
Even though it is not what we are searching for, we shall enjoy seeing
it.

Look at little Nell! She has tumbled into the brook. Her foot slipped,
and down she went.

Don't cry, deary, you are not wet enough to do any harm. The warm sun
will soon dry you.

No, indeed, you will not have to go home.

[Illustration]

Perhaps you will be the first one to find a dobson after all.

Hurrah! hurrah! hear John shout!

He must have found the first dobson.

Yes, he has.

What, May? It is a horrid monster, and you have a good mind to scream?

Well, scream if you want to; that won't do any harm.

It _isn't_ pretty! but we shall like to look at it. You see it is a
larva and a big one, dark gray in color and with a thick leathery skin.

Mollie says it reminds her a little of the larva of the May fly; that
is, in shape.

Let us look at a picture of the May-fly larva.

You see it has a head, a thorax to which is attached the six legs and
the rudimentary wings, and an abdomen, all distinctly separated from
each other.

[Illustration]

The dobson has a head, but no thorax.

The body behind the head is divided into segments that all look very
much alike, and there is a pair of legs attached to each of the first
three segments.

The dobson eats other larvæ that it chews up with its strong jaws.

It lives almost three years in the larval state, so you see it has
plenty of time in which to grow. Of course it moults. It is usually to
be found under stones in swift, running water. Those two pairs of hooks
at the tip of its body are its anchors.

It clasps them about a bit of stone or a stick that is firmly lodged,
and then it can bid defiance to the swirling stream.

Ned wonders why it is always found hiding under stones.

Listen to John, he says fishes are very fond of dobsons, and that is why
they hide away.

Fishermen hunt the dobsons for bait; so you see they have a hard time in
spite of their large size and their strong jaws.

When they have lived nearly three years in the water they crawl out on
the bank and hollow out a place under a stone.

Here they lie, apparently dead, but they are not dead.

They are undergoing a wonderful transformation.

It takes about a month for this transformation, or _metamorphosis_, as
it is called, to be completed.

All of our other insect friends have changed gradually from larval to
adult form. At each moult they became a little more like their parents,
and finally at the last moult, without any resting period, out sprang
the perfect insect.

Not so the dobson. It goes into its hole in the bank a larva, almost
exactly like the larva that hatched from the egg, only, of course, it is
larger. There is no hint of wings. It has no separate thorax and
abdomen. Could we see under the bank where it has crept, to undergo its
great metamorphosis, we should find, not a larva, but a strange-looking,
motionless object.

[Illustration]

Here is the picture of one. See its little wing pads. And now it has a
thorax and an abdomen.

It seems to have changed and been turned to some hard substance.

In this state it is called the _pupa_, which means doll. Is it not a
cunning insect doll? But it is not really a doll. Although so still and
apparently lifeless, yet it lives.

Some day it will burst its pupa shell and pull itself out--not a larva
now, not a pupa, but a strong-winged insect.

In its adult form, it is known as the horned corydalus.

There! I thought John was saving one for us. He had it in a box in his
pocket. Now see what a--a--what shall I say? A beauty? or a monster?
That is just as you feel about it.

It certainly is an alarming-looking insect.

This one is a male, as we can tell by the long, curved jaws that look
very dangerous; but in this instance the creature's appearance is worse
than its bite, and the real biter is the female whose jaws are smaller
but very useful in nipping tormentors or biting prey.

Now here she is--a fit mate for her formidable-looking companion.

[Illustration: MALE CORYDALUS.]

[Illustration: FEMALE CORYDALUS.]

John, you were fortunate in your hunting.

In spite of its terrifying appearance, see what wonderful wings the
corydalus has.

See! John has spread out the wings of the female.

They are indeed beautiful.

May cannot understand how those great wings came out of those little
wing pads.

When the wings were first pulled out of the wing pads they were small,
but they rapidly expanded and became thin and broad and long as the air
touched them.

You will understand that better after a while.

The corydalus differs from all the other insects we have studied, in its
metamorphosis.

It begins life far more unlike its parents than the other insects we
have been looking at, for they had the thorax and abdomen distinct from
the beginning. Instead of changing gradually and remaining active all
the time up to the final metamorphosis, our corydalus goes into the pupa
state, and in that motionless condition transforms to the perfect
insect.

This is called a complete metamorphosis.

When the change is gradual, without any pupa form, any stopping place as
it were, the change is said to be an incomplete metamorphosis.

Yes, the metamorphosis of the grasshoppers is incomplete, and of the
katydids and the crickets and all the other insects we have studied
until we came to the dobson.

Another name for the larva of insects that undergo an incomplete
metamorphosis is _nymph_. Some books speak of the nymph of the
grasshopper, and never of the larva of the grasshopper. Such books use
the word _larva_ only in speaking of the young of insects that undergo a
complete metamorphosis.

Yes, Ned, they would speak of the nymph of the dragon fly, and the nymph
of the May fly and the nymph of the cricket and the katydid, but they
would speak of the larva of the corydalus.

Egg, nymph, adult,--those are the stages of insects that have an
incomplete metamorphosis.

Egg, larva, pupa, adult,--those are the stages of insects that have a
complete metamorphosis.

No, it is not wrong to say larva instead of nymph. I only want you to
know how the word nymph is used, so that when you see it in reading
about insects you will know what it means.

The corydalus lays its eggs near the water, and it lays a great
many--sometimes nearly three thousand. Think of that! The young larvæ
crawl into the water as soon as they are hatched, and those that escape
the hungry fishes grow into these large larvæ and finally metamorphose
into the big-horned corydalus.

It is such a remarkably fierce-looking creature that it has received
many names that are neither complimentary nor beautiful, such as
conniption bug, alligator, and dragon, and numerous others equally
expressive.

Now, we must go home. Let us put the dobson back into the brook.

It does no harm, and we will not kill it.

Yes, Ned, there are smaller insects like the corydalus that are near
relatives to it, and I am sure you have often seen them.




FAIRY LACEWING


Here is our little Lacewing.

[Illustration]

May says it is a darling, like a woodland fairy clad all in green.

And, oh, its eyes! Are they not beautiful? They shine like gold.

Do its wings not remind you a little of the wings of the corydalus?

May says no, indeed; that has ugly brown wings.

But look again, May. See how these wings are veined, and do you not
remember how you admired the silvery wings of the corydalus when we
spread them out?

Yes, it belongs to the same order as the corydalus.

The name of the insect order to which they both belong is Neuroptera,
from _neuron_, a nerve, and _pteron_--who remembers what _pteron_ means?

Yes, a wing. Nerve-winged.

What does that mean?

It means that the wings are crossed by many nerves or veins. Yes, that
is what gives them their lacelike appearance.

Pretty golden eye, why do we not oftener see you on the trees and
bushes? It is only by accident we found you to-day, down in the grass.

The truth is, this pretty fairy hides by day and comes out at night to
lay its eggs. Like the May fly, the adult lacewing does not eat. It is a
helpless little beauty, though it has one powerful means of defence, as
you will discover if you touch it.

Ah, yes; you have already detected it! It gives forth such an offensive
odor that nothing, one should think, could have the hardihood to eat it.

May says she supposes the larva of the lacewing is a little monster like
that of the corydalus.

But you will not expect to find it as large as a dobson.

I think if we hunt about a little, we can find one.

Here is one on the leaf. See what a little fellow! And how fast it runs!

[Illustration]

We shall have to take it captive, in order to get a chance to see it.

It is a funny little larva, with jaws that are _tre-men-dous_ for one of
its size.

Why do you suppose it has such jaws?

May says, for the usual reason, to eat up other larvæ.

Yes; but wait till I tell you another name for this larva.

It is also called the aphis lion.

Aphis, you know, is the same as aphid, or plant louse. In other words it
is the plant-louse lion.

Ah, yes; you are quite willing it should devour the aphids.

And it does. It is very fond of them, though it will also devour any
unlucky insect it is strong enough to overcome.

It has a terrible appetite, this child of the pretty lacewing.

It would even eat its brothers and sisters before they hatched out of
the egg if it could get at them.

The pretty lacewing knows what an appetite her ever hungry larvæ will
have, and so she protects them against each other.

Clever little mother! she lays the eggs in such a way that the larvæ
that hatch out first cannot devour the rest of the eggs.

How do you think she manages it?

Here are some of her eggs on this leaf.

Yes, John; each one is on top of a slender stalk.

The stalk is of stiff silk.

There they are, like a little forest, with an egg for each tree top.

[Illustration]

When an egg hatches the young aphis lion drops down to the leaf and runs
about like a ravening lion seeking some living thing to devour.

Above his head, quite unsuspected by him, are the eggs out of which his
brothers and sisters have not yet hatched.

What a feast he could have if he knew about it!

And what a sad little cannibal he would be!

The larva of the aphis lion has no distinct thorax. Its legs are
attached to the upper segments of the body, and its metamorphosis is
like that of the corydalus.

When about to become a pupa, it makes for itself a little covering of
white silk. Here it lies quite motionless and undergoes the final
transformation.

Yes, its metamorphosis is complete.

It bites an opening through its silken walls, and out steps--not the
hungry, little, all-devouring aphis lion, but this elegant lady with her
pale-green lacelike wings and her large, golden eyes.

You see the aphis lion is our very good friend.

It helps us get rid of the aphids, and we should never kill a lacewing
or a child of the lacewing.




THE ANT LION


John has found something he wants us all to see.

We will go with him.

Now we will sit down on this sand bank and look at what he has to show
us. See! those smooth little funnels in the sand.

[Illustration]

Those are what we have come out to see.

Let us watch them a while.

Mollie says an ant is walking close to the rim of the funnel she is
watching. Now the ant slips over the edge and slides down the smooth
sides of the funnel.

And see! from the bottom of the funnel leap out two curved jaws
and--good-by, ant!

The ant has been dragged down out of sight through a hole in the bottom
of the funnel.

What a strange proceeding!

Who can be living down there at the bottom of the funnel?

We are sorry to disturb such a pretty piece of work, but we shall have
to dig out one of the funnels. We shall have to be quick, too.

There, there, under the trowel! No, it is gone. There it is again. Dig
fast, Ned. That is right. He has put it with a trowelful of sand into
our box.

We will gently shake out the sand until we uncover it.

Mabel says it is just what she thought it was--a larva.

Yes, it is a larva.

[Illustration]

You see it looks a little like the lacewing larva, and it, too, belongs
to the Neuroptera.

What jaws!

How do you suppose it makes its tunnel?

If we give it plenty of sand, and keep very quiet, perhaps it will go to
work.

There! it is throwing the sand about.

May says it is using its own head as a trowel. Yes, it is shovelling the
sand away with its head.

Why is Ned laughing? Oh, see the ant lion he is watching! An ant slid
part way down its funnel and tried to climb out again, and the ant lion
down below is flinging sand at it.

There! it has succeeded in making the poor ant slip; down it goes, and
now the ant lion has seized it and dragged it down under the ground.

It is easy to find these pit-falls of the ant lion in sand banks in the
summer-time.

Yes, May, the ant lions eat many ants, and they moult and grow, and,
finally, they, too, make a little cocoon about themselves.

Yes, the little silken room they weave we call a cocoon, but the ant
lions make theirs of silk and sand.

[Illustration]

Within the cocoon they become motionless pupæ, and finally appear as
silver-winged little creatures that bear no resemblance to the
large-jawed, ever hungry, ant lion.

May says she thinks the Neuroptera differ from all the other orders in
the way the larvæ transform.

That is true, May, they do.

In no other order that we have studied do the insects go into the pupal
state to undergo the final transformation.

Who remembers what the young of insects that undergo an incomplete
metamorphosis are sometimes called?

Dear me, you all remember!

Yes, the young are sometimes called nymphs.

The nymphs do not change into pupæ.

The young grasshoppers do not change into motionless pupæ, they just
keep on growing until they are perfect adults.

Young grasshoppers are sometimes called nymphs instead of larvæ.

[Illustration]




THE LITTLE CADDICE FLIES


Here we are in the woods again.

How sweet it smells!

Let us sit down by this brook and look into it.

It is such a clear little stream, with fine sand and little pebbles at
the bottom.

What has Nell found that pleases her so?

She says she sees some little bars of sand moving about.

Ned says they are not sand bars but tubes of sand, containing a little
live thing.

The truth is, this sand bag is a house, and its occupant is a larva.

[Illustration]

See the black head come popping out, and the tiny fore legs.

The larva does not come entirely out, you see, but pulls its house along
with it, and when it is frightened it pops back into its little stone
case.

Mollie says it reminds her of a hermit crab.

A hermit crab, you know, lives on the seashore and takes possession of
an empty snail shell for a house.

It comes partly out dragging its house with it, but if you disturb it,
it draws back, sometimes quite out of sight.

[Illustration]

This little larva lives in a house, too, but it is a house of its own
making.

It is the larva of the caddice fly, or case fly.

Let us put one of these little sand cases in the saucer here.

Please fill the saucer about half full of water, John. Thank you.

Now, Mollie, I see you have picked up a fine big caddice case.

Put it in the saucer, and let us watch the larva crawl about.

[Illustration]

It never comes entirely out of the case, you see. It holds on to it with
the hinder part of its body.

Its little black head is hard, but its body is soft, and that is why it
does not like to expose itself to hungry larvæ that might be living in
the water.

May says she wants to see the whole larva.

Suppose we carefully break away the little sand case.

No, indeed, little Nell, we are not going to hurt the larva; we are only
going to open its house.

[Illustration]

There, the larva is outside now, and you can see what a tender, pale
little thing it is.

It does not like to have its soft body exposed.

See! it is already gathering little bits of sand together.

It seems to be sticking them fast to its body.

It is really binding them together by a saliva-like substance from its
mouth.

It draws out little glistening threads that harden into silk as soon as
they touch the water.

Queer saliva you think.

But the caddice larva does not find it queer. It is used to saliva that
hardens into silk.

Yes, that is the way the larva of the aphis lion and of the ant lion
made their cocoons. They spun out silk in this manner.

The caddice larva makes its house of silk and sand and also lines it
with a beautiful covering of fine silk.

Yes, May, it papers its walls with silk.

You see it did not hurt the caddice larva to take away its house; it
immediately went to work to build another.

Why not pull it out, instead of breaking its house to pieces?

Because if it had been pulled hard enough to come out, it might have
been torn to pieces, it is such a tender little thing, and it holds fast
so tightly.

So the best way to remove it safely is to break its case bit by bit from
around it.

It does no harm to break its case if one is careful. It will soon build
another.

Yes, this larva has no distinct thorax. It is like the larvæ of the
dobson, the aphis lion, and the ant lion in that respect.

[Illustration]

See! John has found one whose tube is made of quite large stones as
compared with this tube of fine sand that we have broken open.

Some caddice larvæ build houses of wood instead of stone. They stick
little twigs together, and some use little pieces of leaves.

Others again use tiny snail shells which, as you can imagine, make very
pretty cases.

[Illustration]

Our little caddice has made a neat little house of fine sand grains very
nicely put together.

Some others make much rougher houses.

You will be apt to find the caddice larvæ in any brook and in some
ponds, and I hope you will always look for them.

Notice the tracery in the soft mud of the brook.

Those lines that look as though some one had been ornamenting the bottom
of the brook are made by our caddice larvæ.

[Illustration]

They drag their cases along and thus make these lines.

Sometimes such lines are made by the little fresh-water snails; but you
can always find the decorator by following along the lines he makes.

What, May? How is the delicate larva able to cling to the case tightly
enough to pull it along? If you look at it very carefully, you will find
a pair of tiny hooks at the tail end by which it can hold on to the silk
lining; and some caddice larvæ have hard points on their backs which
help them to hold fast.

The caddice larvæ are carnivorous; that is, they eat animal food.

Yes, May, their food is usually the larvæ of other insects, but you will
be glad to know that some of them eat plants too.

They eat the larvæ of the May flies when they can find them and no doubt
they build these strong cases about themselves to prevent the May fly
larvæ from returning the compliment.

Frank has found some empty cases, yes, and some that are closed at both
ends.

Now, let us look at this one closed at both ends. What do you suppose is
in it?

We will open just one of these closed cases.

There! It is a pupa! Yes, Nell, a very pretty doll is this.

[Illustration]

It has a thorax, you see, and an abdomen. Its long antennæ lie close to
its body as do its little wing pads.

Yes, the caddice larva grows and moults in the usual way. It keeps
adding to its house as it grows longer. Finally, it closes the end of
its little tube and lies quite still.

You know what happens next. Its wormlike form divides into thorax and
abdomen. Legs and wings appear, attached to the thorax. In short, it is
no longer a wormlike creature.

Finally, it comes forth from its case. It never goes into it again.

[Illustration]

It does not need to, for now it is a dainty little nun, with a long,
tan-colored cloak. Its cloak, of course, is its wings folded down about
its body. Like the fairy May flies it has no mouth and eats nothing in
the adult form.

It looks like a dainty brown moth as it flutters about the bushes and
goes flying up and down the brook.

You will always find these little brown-cloaked figures flitting about
the brooks, where the caddice larvæ live.

You see the caddice undergoes a complete metamorphosis.

No, it does not belong to the Neuroptera.

Examine its wings very carefully. Look at them through the magnifying
glass, and you will see they are clothed with hairs.

So these are the hair wings.

The name of the order to which they belong is Trichoptera, from
_pteron_, a wing, and _thrix_, a hair.

Sometime you must take a caddice larva from its house and put it in a
saucer of water with fine bits of mica, which you know is another name
for the isinglass that makes the little windows in our stoves.

If you are fortunate, your caddice will build for itself a little glass
house, through whose walls you can look and see what is going on inside.

[Illustration]




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|"e" with a macron [=e] "e" with a breve [)e]                           |
|                                                                       |
|"i" with a macron [=i] "i" with a breve [)i]                           |
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+-----------------------------------------------------------------------+




GLOSSARY


~Abdomen~ (ab-d[=o]'-men). The lower part of an animal's body. The part
behind the thorax in insects.

~Adult~ ([)a]-dult'). (L. adultus = grown up.) Grown to full size and
strength.

~Anchor~ (ang'-kor). (Gr. = a hook.) Anchors are used to fasten ships by
a line to the bottom of the sea. Applied to anything that holds a
movable body fast in one place.

~Antenna~ pl. ~Antennae~ (an-ten'-nee). The feeler in front of the
insect's head with which it hears and smells as well as feels.

~Aphis~ ([=a]'-fis) pl. ~Aphides~ (af'-i-d[=e]z).

~Aphid~ (af'-id) The plant louse, of which there are a great
many kinds.

~Apparatus~ (ap-a-r[=a]'-tus). Tools or machinery used in working or in
making things.

~Aquarium~ (a-kw[=a]'-ri-um). (L. aquarium = watering-place for cattle.)
A vessel of water for keeping water plants or water animals.

~Attract~ (at-trakt'). (L. attractus = draw to.) To draw toward.

~Audubon~ (aw'-do-bon), John James. A very famous student of birds and
their ways. In his great book, "The Birds of America," which was
published in 1827, there are many large colored drawings made by
himself.

~Beech-nuts~ Small, three-cornered nuts that grow on beech trees, and
that are very sweet and good.

~Breeding-place~ The place where young animals are born.

~Brood~ A family of young animals.

~Caddice~, or ~Caddis fly~ (kad'-is fl[=i]). Sometimes called "case
fly," from the case or shell which the larva makes about itself;
"caddice" is another way of saying "case."

~Camera~ (kam'-e-ra). An instrument for taking photographs.

~Cannibal~ (kan'-[)i]-bal). A human being who eats human flesh. Any
animal that eats others of its own kind.

~Cargo~ (kar'-go). The goods or merchandise or whatever is carried in a
ship.

~Carnivorous~ (kar-niv'-[=o]-rus). (L. carnivorus = flesh-eating.)
Applied to animals that feed on flesh, and plants that feed on insects.

~Cast~ The cast-off skin of an insect that keeps the form of the
insect's body.

~Characteristic~ (kar-ak-te-ris'-tik). Showing the peculiar qualities of
a person or thing.

~Chitinous~(k[=i]'-tin-us). Hard, horny, and shell-like.

~Cicada~ (si-k[=a]'-dä). (L. cicada = tree cricket.) A popular name for
insects, like the grasshopper, locust, and cricket, which make a
creaking or chirping noise.

~Cochineal~ (koch'-i-n[=e]l or koch-i-n[=e]l'). A crimson dyestuff made
of the dried bodies of certain small insects. The insect is also called
cochineal.

~Cocoon~ (ko-koon'). (L. concha = a shell.) The silky envelope which the
larvæ of many insects spin to cover themselves.

~Compact~ (kom-pakt'). (L. compactus = joined together.) Closely and
firmly united.

~Compound~ (kom'-pound). Made up of two or more parts.

~Coxa~ (kok'-sa). (L. coxa = the hip.) The first segment of an insect's
_leg_, sometimes called the hip.

~Crevices~ (krev'-is-es). (L. crepare = to break, burst, crack.) Narrow
openings or cracks.

~Descendant~ (d[=e]-sen'-dant). (L. descendere = to descend.) People or
animals who have come from earlier people or animals.

~Ear drum~ ([=e]r' drum). A membrane stretched across inside the ear.

~Ejected~ ([=e]-jekt'-ed). (L. ejicere = to throw out.) Thrown out,
driven away.

~Emaciated~ ([=e]-m[=a]'-shi-[=a]t-ed). (L. emaciare = to make lean.)
Very thin and wasted.

~Emerge~ (e-merj'). (L. emergere = to rise out.) To appear, to come into
sight.

~Ephemeridæ~ (ef-[=e]-mer'-i-d[=e]). (Gr. word = "lasting but a day.")
The name of the May fly order.

~Facets~ (fas'-ets). Little faces; small surfaces.

~Femur~ (f[=e]'-mer). (L. femur = a thigh.) The long bone of the upper
leg above the knee. The third segment in the insect's leg.

~Formidable~ (for'-mi-da-bl). (L. formidabilis = causing fear.) Hard to
deal with; difficult to overcome.

~Fry~ (fr[=i]). The young of fishes; used for any small animals.

~Funnel~ (fun'-el). The shape of a hollow cone.

~Gauzy~ (gaw'-zi). Very fine, thin, and transparent.

~Ghosts~ (g[=o]sts). The spirits or shadows of the dead.

~Gills~ The breathing organs of any animal that lives in the water.

~Gorge~ (gorj). To feed greedily; to stuff one's self.

~Gossamer~ (gos'-a-mer). A fine filmy substance, like the cobweb of
spiders.

~Grub~ The larva of an insect.

~Hearth~ (h[)a]rth). The part of the floor of a room where the fire is
built.

~Hemiptera~ (h[=e]-mip'-te-ra). (Gr. = half-wing.) The name of an insect
order including many kinds, all known as bugs.

~Incomplete~ (in-kom-pl[=e]t'). Not fully finished or developed.

~Injurious~ (in-jew'-ri-us). (L. injuriasus = acting unjustly or
wrongly.) Something wrong or harmful.

~Inquisitive~ (in-kwiz'-i-tiv). Curious and prying.

~Insatiable~ (in-s[=a]'-shi-a-bl). (L. insatiabilis = that cannot be
satisfied.) Not easily satisfied; very greedy.

~Isinglass~ ([=i]'-zing-glas). Thin, transparent sheets of mica.

~Joint~ The place where two things or parts of one thing are joined or
united.

~Keel~ (k[=e]l). The lowest part of the bottom of a ship.

~Kettle drum~ (ket'-l drum). A musical instrument made of a hollow brass
hemisphere over which is stretched parchment. This is sounded by blows
from a mallet or stick.

~Larva~ (lar'-va); pl. ~Larvæ~ (lar'-v[=e]). The young insect.

~Lock~ To fasten in place.

~Locust~ (l[=o]'-kust). A shorthorned grasshopper.

~Mantis~ (man'-tis); pl. ~Mantes~ (man'-t[=e]z). (Gr. = prophet.) An
orthopterous insect that holds its arms as if in prayer.

~Membrane~ (mem'-br[=a]n). (L. membrana = thin skin.) A thin, soft
tissue that connects two parts, or lines a body.

~Mercaptan~ (mer-kap'-tan). (L. mercaptans = taking mercury.) A
vile-smelling liquid that gets its name because of its strong action on
mercury. It seizes upon mercury, so to speak.

~Metallic~ (me-tal'-ik). Made up of metals, or like metals.

~Metamorphosis~ (met-a-mor'-f[=o]-sis). (L. metamorphosis = change,
transformation.) A change of form; a development, as the change of the
caterpillar into the chrysalis.

~Mica~ (m[=i]'-ka). A transparent mineral that can be separated into
thin sheets or layers.

~Microscope~ (m[=i]'-kr[=o]-sk[=o]p). An instrument that magnifies, or
makes objects look larger when placed beneath it.

~Moult~ (m[=o]lt). (L. mutare = to change.) To shed or cast off the
feathers, hair, or skin.

~Muscle~ (mus'-l). Bundles of fibres that have the power of growing
longer or shorter. The body is moved by means of the muscles.

~Nary~ (ner'-i). "Ne'er a," a contraction of "never a."

~Nerve~ (nerv). (L. nervus = a fibre _or_ tendon.) The nerves are fibres
or threads that carry impressions to the brain. Nerved = having fibres,
as in the wings of insects.

~Neuroptera~ (n[=u]-r[)o]p'-te-ra). (Gr. = nerve-wing.) The name of an
insect order.

~Nymph~ (nimf). (L. nympha = a bride, a young girl.) The young of
insects that undergo an incomplete metamorphosis.

~Ocelli~ (o-sel'-le), pl. of Ocellus. (L. = a little eye.) The tiny,
simple eyes of insects.

~Odonata~ ([=o]-d[=o]-na'-ta). The name of an insect order to which
belong the dragon flies.

~Odors~ Pleasant or unpleasant smells.

~Opera-glass~ (op'-e-ra-glas). Magnifying glasses used at the theatre or
opera to make things seem nearer.

~Organism~ (or'-gan-izm). A member of the animal or vegetable kingdom.

~Orthoptera~ (or-thop'-t[=e]-ra). (Gr. = straight-wing.) An insect order
to which belong the grasshoppers.

~Ovipositor~ ([=o]-v[)i]-poz'-[)i]-tor). (L. ovum = egg, _and_ ponere =
to place.) The end of the abdomen of some insects, with which they are
able to put their eggs in a good place to be hatched.

~Oxygen~ (ok'-si-jen). A part of the air that is necessary to all animal
and vegetable life.

~Parasites~ (par'-a-s[=i]tz). Animals or plants that live on others.

~Phylloxera~ (fil-ok-s[=e]'-ra). (Gr. = leaf _and_ dry.) An insect very
destructive to grape vines.

~Plaited~ (pl[=a]t'-ed). Folded length-wise like the plaits of a closed
fan.

~Plecoptera~ (pl[=e]-k[)o]p'-t[=e]-ra). (Gr. = twist _and_ wing.) An
insect to which belong the stone flies.

~Pollute~(p[=o]-l[=u]t'). (L. polluere = to make unclean, to soil.) To
make foul or unclean.

~Pores~ (porz). (L. porus = a way, a passage.) Small openings in the
skin to help in breathing.

~Prey~ (pr[=a]). (L. præda = property taken in war.) An animal in the
chase; game.

Prolific (pr[=o]-lif'-ik). Fruitful; producing young in abundance.

~Propel~ (pr[=o]-pel'). (L. propellere = to drive, or push forward.) To
urge onward by force.

Prophet (prof'-et). One who tells of the future.

~Pulvillus~ (pul-vil'-us); pl. ~Pulvilli.~ (L. = a little cushion.) A
little pad or cushion on an insect's foot.

~Ravenous~ (rav'-n-us). Greedy, furiously hungry.

~Repel~ (re-pel'). (L. repellere = to drive back.) To drive back, to
check.

~Resinous~ (rez'-i-nus). Like resin, which is made from pine pitch.

~Rudimentary~ (rew-di-men'-ta-ri). (L. rudimentum = a first attempt.)
Imperfectly developed or in an early stage of development.

~Saliva~ (sa-l[=i]'-va). Spittle. The liquid formed in the mouth, which
mixes with food, and helps it to digest.

~Segment~ (seg'-ment). (L. secare = to cut.) A part cut off, a section.

~Seize~ (s[=e]z). To grasp, to clutch.

~Sensitive~ (sen'-si-tiv). Quick to feel. The nerve of the eye is
sensitive to light, quick to feel light.

~Shellac~ (she-lak' or shel-ak'). It is made from a coloring matter in
the bodies of certain insects. A polish which is used with varnish.

~Silk~ (s[=i]lk). A fine, soft, strong thread made by the larvæ of
certain insects.

~Skeleton~ (skel'-e-ton). (Gr. = ~dried~ up.) The dry bones of the body
taken together.

~Socket~ (sok'-et). Any hollow thing or place which receives or holds
something else.

~Soothsayer~ (söth'-s[=a]-er). One who pretends to know what the future
holds for us.

~Source~ (s[=o]rs). The place where anything begins.

~Species~ (sp[=e]'-shez). A group of closely related animals or plants.

~Spine~ (sp[=i]n). (L. spina = a thorn). Anything sharp and slender like
a thorn.

~Spiracle~ (spir'-or sp[=i]r-a-kl). (L. spiraculum = a breathing hole).
An air-hole.

~Survivals~ (ser-v[=i]'-valz). (L. supervivo = to live over.) Those
outliving the larger number.

~Swammerdam, Johannes~. A Dutch entomologist, born in Amsterdam in 1637.
He published several books on the natural history of insects.

~Syringe~ (sir'-inj). (Gr. = a pipe _or_ reed.) A little instrument for
drawing in water, and forcing it out again.

Tarsus (tar'-sus); pl. ~Tarsi.~ (Gr. = the sole of the foot.) The little
segments that make up the insect's foot. Also the little bones of the
instep.

~Telescope~ (tel'-e-sk[=o]p). (Gr. = to view afar off.) An instrument by
which distant objects are made to appear nearer and larger.

~Thorax~ (th[=o]'-rax). (Gr. = armor for the breast.) That part of the
body of animals between the head and the abdomen.

~Thysanura~ (this-a-n[=u]'-ra). (Gr. = tassel and tail.) An insect order
to which belong the scale fishes.

~Tibia~ (tib'-i-a). (L. tibia = a slender pipe, a musical instrument.) A
long, slender bone in the leg, below the knee. The fourth segment in an
insect's leg, generally long and slender.

~Transformation~ (trans-for-ma'-shon). (L. transformare = to change the
shape of.) A change in form or nature.

~Transparent~ (trans-par'-ent). (L. trans-parere = to appear through.)
Easily seen through.

~Transportation~ (trans-por-ta'-shon). (L. trans-portare = to carry
over.) Carrying from one place to another.

~Tremendous~ (tre-men'-dus). (L. tremendus = fearful, _from_ tremere, to
tremble.) Very wonderful, astounding.

~Trichoptera~ (tr[=i]-kop'-te-ra). (Gr. = hairy-wing.) An insect order
to which belong the caddis flies.

~Trochanter~ (tro-kan'-ter). (Gr. = the ball on which the hip bone turns
in its socket.) The second segment of an insect's leg.

~Unlock~ (un-lok'). To unfasten something that has been closed.

~Unsubstantial~ (un-sub-stan'-shal). Not real or solid, without
substance.

~Vacated~ (v[=a]'-kat-ed). (L. vacare = to be empty or vacant.) Emptied;
possession given up.

~Vegetation~ (vej-e-t[=a]'-shon). (L. vegetare = to quicken.) Living
plants.

~Veined~ (v[=a]nd). (L. vena = a vein.) Marked as with veins, streaked.

~Vibrate~(v[=i]'-br[=a]t). (L. vibratus = set in motion.) To swing; move
to and fro.

~Vibration~ (v[=i]-br[=a]'-shon). Motions back and forth. Vibrations may
be too small for us to see.

Victimized (vik'-tim-[=i]zd). Made a victim of, deceived, badly treated.

~Voracious~ (v[=o]-r[=a]'-shus). (L. vorax = devouring greedily.) Eating
food in large quantities.






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